Major League Baseball Pitcher of the Month Award

In Major League Baseball (MLB), the Pitcher of the Month Award is given monthly during the regular season to two outstanding pitchers, one each in the National League (NL) and American League (AL). The NL began awarding the honor in 1975, and the AL followed in 1979. Upon the introduction of each league's pitcher award, pitchers became ineligible for the position players' monthly award.

Awards by month
Players listed with multiple occurrences are denoted by parentheses containing the ordinal.

The most Pitcher of the Month awards won by a single player is 15 by Roger Clemens. He is followed by Greg Maddux (10), Pedro Martínez (8), Randy Johnson (8), and Johan Santana (8).

{| class="wikitable" !rowspan=2|Year!!rowspan=2|Month!!colspan=2|National League!!colspan=2|American League !Player(s)!!Team(s)!!Player(s)!!Team(s)
 * colspan="6" style="background-color:#DDEEFF"|
 * colspan="6" style="background-color:#DDEEFF"|

1975 to 1979

 * rowspan=6|1975
 * April|| Don Sutton || rowspan="2" | Los Angeles Dodgers ||colspan=2 rowspan=24|
 * May|| Don Sutton (2)
 * June|| Tom Seaver || New York Mets
 * July|| Al Hrabosky || St. Louis Cardinals
 * August|| Burt Hooton || rowspan="2" | Los Angeles Dodgers
 * September|| Burt Hooton (2)
 * rowspan=6|1976
 * April|| Randy Jones || rowspan="2" | San Diego Padres
 * May|| Randy Jones (2)
 * June|| Andy Messersmith || Atlanta Braves
 * July|| Jerry Koosman || New York Mets
 * August|| Ray Burris || Chicago Cubs
 * September|| Don Sutton (3) || Los Angeles Dodgers
 * rowspan=6|1977
 * April|| Tom Seaver (2) || New York Mets
 * May|| Bruce Sutter || rowspan="3" | Chicago Cubs
 * June|| Rick Reuschel
 * July|| Rick Reuschel (2)
 * August|| Tom Seaver (3) || Cincinnati Reds
 * September|| Larry Christenson || Philadelphia Phillies
 * rowspan=6|1978
 * April|| Ross Grimsley || Montreal Expos
 * May|| Bob Knepper || San Francisco Giants
 * June|| Vida Blue || San Francisco Giants
 * July|| J. R. Richard || Houston Astros
 * August|| Kent Tekulve || Pittsburgh Pirates
 * September|| Gaylord Perry || San Diego Padres
 * rowspan=6|1979
 * April|| Ken Forsch || rowspan="3" | Houston Astros || Tommy John || New York Yankees
 * May|| Joe Niekro || Jim Kern || Texas Rangers
 * June|| Joaquín Andújar || Mark Clear || California Angels
 * July|| Dick Tidrow || rowspan="2" | Chicago Cubs || Sid Monge || Cleveland Indians
 * August|| Rick Reuschel (3) || Rick Langford || Oakland Athletics
 * September|| J. R. Richard (2) || Houston Astros || Goose Gossage || New York Yankees
 * colspan="6" style="background-color:#DDEEFF"|
 * August|| Tom Seaver (3) || Cincinnati Reds
 * September|| Larry Christenson || Philadelphia Phillies
 * rowspan=6|1978
 * April|| Ross Grimsley || Montreal Expos
 * May|| Bob Knepper || San Francisco Giants
 * June|| Vida Blue || San Francisco Giants
 * July|| J. R. Richard || Houston Astros
 * August|| Kent Tekulve || Pittsburgh Pirates
 * September|| Gaylord Perry || San Diego Padres
 * rowspan=6|1979
 * April|| Ken Forsch || rowspan="3" | Houston Astros || Tommy John || New York Yankees
 * May|| Joe Niekro || Jim Kern || Texas Rangers
 * June|| Joaquín Andújar || Mark Clear || California Angels
 * July|| Dick Tidrow || rowspan="2" | Chicago Cubs || Sid Monge || Cleveland Indians
 * August|| Rick Reuschel (3) || Rick Langford || Oakland Athletics
 * September|| J. R. Richard (2) || Houston Astros || Goose Gossage || New York Yankees
 * colspan="6" style="background-color:#DDEEFF"|
 * rowspan=6|1979
 * April|| Ken Forsch || rowspan="3" | Houston Astros || Tommy John || New York Yankees
 * May|| Joe Niekro || Jim Kern || Texas Rangers
 * June|| Joaquín Andújar || Mark Clear || California Angels
 * July|| Dick Tidrow || rowspan="2" | Chicago Cubs || Sid Monge || Cleveland Indians
 * August|| Rick Reuschel (3) || Rick Langford || Oakland Athletics
 * September|| J. R. Richard (2) || Houston Astros || Goose Gossage || New York Yankees
 * colspan="6" style="background-color:#DDEEFF"|
 * August|| Rick Reuschel (3) || Rick Langford || Oakland Athletics
 * September|| J. R. Richard (2) || Houston Astros || Goose Gossage || New York Yankees
 * colspan="6" style="background-color:#DDEEFF"|
 * September|| J. R. Richard (2) || Houston Astros || Goose Gossage || New York Yankees
 * colspan="6" style="background-color:#DDEEFF"|
 * colspan="6" style="background-color:#DDEEFF"|

1980 to 1989
Ed Whitson || Atlanta Braves San Francisco Giants || Ron Guidry || New York Yankees Larry Gura (2) || Baltimore Orioles Kansas City Royals
 * rowspan=6|1980
 * April|| J. R. Richard (3) || Houston Astros || Dave Stieb || Toronto Blue Jays
 * May|| Steve Carlton || Philadelphia Phillies || Chuck Rainey || Boston Red Sox
 * June|| Jerry Reuss || Los Angeles Dodgers || Steve Stone || Baltimore Orioles
 * July|| Pat Zachry || New York Mets || Larry Gura || Kansas City Royals
 * August|| Rick Reuschel (4) || Chicago Cubs || Bob Stanley || Boston Red Sox
 * September|| Marty Bystrom || Philadelphia Phillies || Tim Stoddard || Baltimore Orioles
 * rowspan=6|1981
 * April|| Fernando Valenzuela || Los Angeles Dodgers || Matt Keough || Oakland Athletics
 * May|| Charlie Lea || Montreal Expos || Mark Clear (2) || Boston Red Sox
 * June||colspan=4 rowspan=2 align=center|1981 Major League Baseball strike
 * July
 * August|| Rick Camp
 * rowspan=6|1981
 * April|| Fernando Valenzuela || Los Angeles Dodgers || Matt Keough || Oakland Athletics
 * May|| Charlie Lea || Montreal Expos || Mark Clear (2) || Boston Red Sox
 * June||colspan=4 rowspan=2 align=center|1981 Major League Baseball strike
 * July
 * August|| Rick Camp
 * June||colspan=4 rowspan=2 align=center|1981 Major League Baseball strike
 * July
 * August|| Rick Camp
 * August|| Rick Camp
 * August|| Rick Camp
 * September|| Tom Seaver (4) || Cincinnati Reds || Dennis Martínez
 * September|| Tom Seaver (4) || Cincinnati Reds || Dennis Martínez
 * rowspan=6|1982
 * April|| Steve Rogers || Montreal Expos || Geoff Zahn || California Angels
 * May|| Dick Ruthven || Philadelphia Phillies || LaMarr Hoyt || Chicago White Sox
 * June|| Steve Howe || Los Angeles Dodgers || Jim Beattie || Seattle Mariners
 * July|| John Candelaria || Pittsburgh Pirates || Tippy Martinez || rowspan="2" | Baltimore Orioles
 * August|| Nolan Ryan || Houston Astros || Jim Palmer
 * September|| Joaquín Andújar (2) || St. Louis Cardinals || Rick Sutcliffe || Cleveland Indians
 * rowspan=6|1983
 * April|| Pascual Pérez || Atlanta Braves || Rick Honeycutt || Texas Rangers
 * May|| Bill Laskey || San Francisco Giants || Dave Stieb (2) || Toronto Blue Jays
 * June|| Burt Hooton (3) || Los Angeles Dodgers || Charlie Hough || Texas Rangers
 * July|| Joe Price || Cincinnati Reds || Scott McGregor || Baltimore Orioles
 * August|| Jesse Orosco || New York Mets || Jack Morris || Detroit Tigers
 * September|| John Denny || Philadelphia Phillies|| Richard Dotson || Chicago White Sox
 * rowspan=6|1984
 * April|| Rick Honeycutt (2) || Los Angeles Dodgers || Jack Morris (2) || Detroit Tigers
 * May|| Nolan Ryan (2) || Houston Astros || Mike Boddicker || Baltimore Orioles
 * June|| Ron Darling || New York Mets || Charlie Hough (2) || Texas Rangers
 * July|| Orel Hershiser || Los Angeles Dodgers || Willie Hernández || Detroit Tigers
 * August|| Rick Sutcliffe (2) || Chicago Cubs || Roger Clemens || Boston Red Sox
 * September|| Dwight Gooden || New York Mets || Doyle Alexander || Toronto Blue Jays
 * rowspan=6|1985
 * April|| Fernando Valenzuela (2) || Los Angeles Dodgers || Charlie Leibrandt || Kansas City Royals
 * May|| Andy Hawkins || San Diego Padres || Dave Stieb (3) || Toronto Blue Jays
 * June|| John Tudor || St. Louis Cardinals || Jay Howell || Oakland Athletics
 * July|| Fernando Valenzuela (3) || Los Angeles Dodgers || Bret Saberhagen || Kansas City Royals
 * August|| Shane Rawley || Philadelphia Phillies || Dave Righetti || New York Yankees
 * September|| Dwight Gooden (2) || rowspan="2" | New York Mets || Charlie Leibrandt (2) || Kansas City Royals
 * rowspan=6|1986
 * April|| Dwight Gooden (3) || Roger Clemens (2) || Boston Red Sox
 * May|| Jeff Reardon || Montreal Expos || Don Aase || Baltimore Orioles
 * June|| Rick Rhoden || Pittsburgh Pirates || Roger Clemens (3) || Boston Red Sox
 * July|| Todd Worrell || St. Louis Cardinals || Jack Morris (3) || Detroit Tigers
 * August|| Bill Gullickson || Cincinnati Reds || Mike Witt || California Angels
 * September|| Mike Krukow || San Francisco Giants || Bruce Hurst || Boston Red Sox
 * rowspan=6|1987
 * April|| Sid Fernandez || New York Mets || Bret Saberhagen (2) || Kansas City Royals
 * May|| Steve Bedrosian || Philadelphia Phillies || Jim Clancy || Toronto Blue Jays
 * June|| Orel Hershiser (2) || Los Angeles Dodgers || Steve Ontiveros || Oakland Athletics
 * July|| Floyd Youmans || Montreal Expos || Frank Viola || Minnesota Twins
 * August|| Doug Drabek || Pittsburgh Pirates || Mark Langston || Seattle Mariners
 * September|| Pascual Pérez (2) || Montreal Expos || Doyle Alexander (2) || Detroit Tigers
 * rowspan=6|1988
 * April|| Orel Hershiser (3) || Los Angeles Dodgers || Dave Stewart || Oakland Athletics
 * May|| David Cone || New York Mets || Frank Viola (2) || Minnesota Twins
 * June|| Greg Maddux || Chicago Cubs || Mark Gubicza || Kansas City Royals
 * July|| John Franco || rowspan="2" | Cincinnati Reds || Roger Clemens (4) || Boston Red Sox
 * August|| Danny Jackson || Mark Langston (2) || Seattle Mariners
 * September|| Orel Hershiser (4) || Los Angeles Dodgers || Bruce Hurst (2) || Boston Red Sox
 * rowspan=6|1989
 * April|| Mark Davis || San Diego Padres || Jeff Ballard || Baltimore Orioles
 * May|| Rick Reuschel (5) || San Francisco Giants || Chuck Finley || California Angels
 * June|| Mike Scott || Houston Astros || Mark Gubicza (2) || Kansas City Royals
 * July|| Mark Langston (3) || Montreal Expos || Mike Moore || Oakland Athletics
 * August|| Tom Browning || Cincinnati Reds || Bret Saberhagen (3) || rowspan="2" | Kansas City Royals
 * September|| Tim Belcher || Los Angeles Dodgers || Bret Saberhagen (4)
 * colspan="6" style="background-color:#DDEEFF"|
 * June|| Rick Rhoden || Pittsburgh Pirates || Roger Clemens (3) || Boston Red Sox
 * July|| Todd Worrell || St. Louis Cardinals || Jack Morris (3) || Detroit Tigers
 * August|| Bill Gullickson || Cincinnati Reds || Mike Witt || California Angels
 * September|| Mike Krukow || San Francisco Giants || Bruce Hurst || Boston Red Sox
 * rowspan=6|1987
 * April|| Sid Fernandez || New York Mets || Bret Saberhagen (2) || Kansas City Royals
 * May|| Steve Bedrosian || Philadelphia Phillies || Jim Clancy || Toronto Blue Jays
 * June|| Orel Hershiser (2) || Los Angeles Dodgers || Steve Ontiveros || Oakland Athletics
 * July|| Floyd Youmans || Montreal Expos || Frank Viola || Minnesota Twins
 * August|| Doug Drabek || Pittsburgh Pirates || Mark Langston || Seattle Mariners
 * September|| Pascual Pérez (2) || Montreal Expos || Doyle Alexander (2) || Detroit Tigers
 * rowspan=6|1988
 * April|| Orel Hershiser (3) || Los Angeles Dodgers || Dave Stewart || Oakland Athletics
 * May|| David Cone || New York Mets || Frank Viola (2) || Minnesota Twins
 * June|| Greg Maddux || Chicago Cubs || Mark Gubicza || Kansas City Royals
 * July|| John Franco || rowspan="2" | Cincinnati Reds || Roger Clemens (4) || Boston Red Sox
 * August|| Danny Jackson || Mark Langston (2) || Seattle Mariners
 * September|| Orel Hershiser (4) || Los Angeles Dodgers || Bruce Hurst (2) || Boston Red Sox
 * rowspan=6|1989
 * April|| Mark Davis || San Diego Padres || Jeff Ballard || Baltimore Orioles
 * May|| Rick Reuschel (5) || San Francisco Giants || Chuck Finley || California Angels
 * June|| Mike Scott || Houston Astros || Mark Gubicza (2) || Kansas City Royals
 * July|| Mark Langston (3) || Montreal Expos || Mike Moore || Oakland Athletics
 * August|| Tom Browning || Cincinnati Reds || Bret Saberhagen (3) || rowspan="2" | Kansas City Royals
 * September|| Tim Belcher || Los Angeles Dodgers || Bret Saberhagen (4)
 * colspan="6" style="background-color:#DDEEFF"|
 * June|| Greg Maddux || Chicago Cubs || Mark Gubicza || Kansas City Royals
 * July|| John Franco || rowspan="2" | Cincinnati Reds || Roger Clemens (4) || Boston Red Sox
 * August|| Danny Jackson || Mark Langston (2) || Seattle Mariners
 * September|| Orel Hershiser (4) || Los Angeles Dodgers || Bruce Hurst (2) || Boston Red Sox
 * rowspan=6|1989
 * April|| Mark Davis || San Diego Padres || Jeff Ballard || Baltimore Orioles
 * May|| Rick Reuschel (5) || San Francisco Giants || Chuck Finley || California Angels
 * June|| Mike Scott || Houston Astros || Mark Gubicza (2) || Kansas City Royals
 * July|| Mark Langston (3) || Montreal Expos || Mike Moore || Oakland Athletics
 * August|| Tom Browning || Cincinnati Reds || Bret Saberhagen (3) || rowspan="2" | Kansas City Royals
 * September|| Tim Belcher || Los Angeles Dodgers || Bret Saberhagen (4)
 * colspan="6" style="background-color:#DDEEFF"|
 * May|| Rick Reuschel (5) || San Francisco Giants || Chuck Finley || California Angels
 * June|| Mike Scott || Houston Astros || Mark Gubicza (2) || Kansas City Royals
 * July|| Mark Langston (3) || Montreal Expos || Mike Moore || Oakland Athletics
 * August|| Tom Browning || Cincinnati Reds || Bret Saberhagen (3) || rowspan="2" | Kansas City Royals
 * September|| Tim Belcher || Los Angeles Dodgers || Bret Saberhagen (4)
 * colspan="6" style="background-color:#DDEEFF"|
 * August|| Tom Browning || Cincinnati Reds || Bret Saberhagen (3) || rowspan="2" | Kansas City Royals
 * September|| Tim Belcher || Los Angeles Dodgers || Bret Saberhagen (4)
 * colspan="6" style="background-color:#DDEEFF"|
 * colspan="6" style="background-color:#DDEEFF"|
 * colspan="6" style="background-color:#DDEEFF"|

1990 to 1999

 * rowspan=6|1990
 * April|| John Tudor (2) || St. Louis Cardinals || Dave Stewart (2) || Oakland Athletics
 * May|| Jack Armstrong|| Cincinnati Reds || Bobby Thigpen || Chicago White Sox
 * June|| Ramón Martinez || Los Angeles Dodgers || Randy Johnson || Seattle Mariners
 * July|| Danny Darwin Doug Drabek (2) || Houston Astros Pittsburgh Pirates || Chuck Finley (2) Bobby Witt || California Angels Texas Rangers
 * August|| Doug Drabek (3) || Pittsburgh Pirates || Roger Clemens (5) || Boston Red Sox
 * September|| Dwight Gooden (4) || New York Mets || Dave Stewart (3) || Oakland Athletics
 * rowspan=6|1991
 * April|| Lee Smith || St. Louis Cardinals || Roger Clemens (6) || Boston Red Sox
 * May|| Tom Glavine || Atlanta Braves || Scott Erickson || rowspan="2" | Minnesota Twins
 * June|| Rob Dibble || Cincinnati Reds || Jack Morris (4)
 * July|| Dennis Martínez (2) || Montreal Expos || Bill Krueger || Seattle Mariners
 * August|| Mitch Williams || Philadelphia Phillies || Kevin Tapani || Minnesota Twins
 * September|| Chris Nabholz || Montreal Expos || Roger Clemens (7) || Boston Red Sox
 * rowspan=6|1992
 * April|| Bill Swift || San Francisco Giants || Bill Krueger (2) || Minnesota Twins
 * May|| Mike Morgan || Chicago Cubs || Roger Clemens (8) || Boston Red Sox
 * June|| Randy Tomlin || Pittsburgh Pirates || John Smiley || Minnesota Twins
 * July|| Tom Glavine (2) || Atlanta Braves || Kevin Appier || Kansas City Royals
 * August|| Dennis Martínez (3) || Montreal Expos || Roger Clemens (9) || Boston Red Sox
 * September|| José Rijo || Cincinnati Reds ||Cal Eldred || Milwaukee Brewers
 * rowspan=6|1993
 * April|| Ken Hill || Montreal Expos || Jimmy Key || New York Yankees
 * May|| Tommy Greene || Philadelphia Phillies || Danny Darwin (2) || Boston Red Sox
 * June|| Darryl Kile Chris Hammond || Houston Astros Florida Marlins || Rick Aguilera || Minnesota Twins
 * July|| Bill Swift (2) || San Francisco Giants || Fernando Valenzuela (4) || Baltimore Orioles
 * August|| Greg Maddux (2) || Atlanta Braves || Bill Gullickson (2) || Detroit Tigers
 * September|| John Wetteland || Montreal Expos || Wilson Álvarez || Chicago White Sox
 * rowspan=6|1994
 * April|| Bob Tewksbury || St. Louis Cardinals || Ben McDonald || Baltimore Orioles
 * May|| Doug Drabek (4) || Houston Astros || David Cone (2) || Kansas City Royals
 * June|| Bobby Muñoz || Philadelphia Phillies || Cal Eldred (2) || Milwaukee Brewers
 * July|| Bret Saberhagen (5) || New York Mets || Alex Fernandez || Chicago White Sox
 * August||colspan=4 rowspan=3 align=center|1994–95 Major League Baseball strike 
 * September
 * rowspan=6|1995
 * April
 * May|| Heathcliff Slocumb || Philadelphia Phillies || Kenny Rogers || Texas Rangers
 * June|| Hideo Nomo || Los Angeles Dodgers || Kevin Appier (2) || Kansas City Royals
 * July|| Greg Maddux (3) || Atlanta Braves || Tim Wakefield || rowspan="2" | Boston Red Sox
 * August|| Sid Fernandez (2) || Philadelphia Phillies || Erik Hanson
 * September|| Greg Maddux (4) || rowspan="3" | Atlanta Braves || Norm Charlton || Seattle Mariners
 * rowspan=6|1996
 * April|| John Smoltz || Juan Guzmán || Toronto Blue Jays
 * May|| John Smoltz (2) || Charles Nagy || rowspan="2" | Cleveland Indians
 * June|| Jeff Fassero || rowspan="2" | Montreal Expos || Orel Hershiser (5)
 * July|| Jeff Fassero (2) || Pat Hentgen || rowspan="2" | Toronto Blue Jays
 * August|| Kevin Brown || Florida Marlins || Pat Hentgen (2)
 * September|| Hideo Nomo (2) || Los Angeles Dodgers || Charles Nagy (2) || Cleveland Indians
 * rowspan=6|1997
 * April|| Tom Glavine (3) || Atlanta Braves || Andy Pettitte || New York Yankees
 * May|| Bobby Jones || New York Mets || Roger Clemens (10) || Toronto Blue Jays
 * June|| Kent Mercker || Cincinnati Reds || Randy Johnson (2) || Seattle Mariners
 * July|| Darryl Kile (2) || Houston Astros || Chuck Finley (3) Brad Radke || Anaheim Angels Minnesota Twins
 * August|| Pedro Martínez || Montreal Expos || Roger Clemens (11) || Toronto Blue Jays
 * September|| Jeff Shaw || Cincinnati Reds || Jeff Fassero (3) || Seattle Mariners
 * rowspan=6|1998
 * April|| Tom Glavine (4) || Atlanta Braves || Chuck Finley (4) || Anaheim Angels
 * May|| Orel Hershiser (6) || San Francisco Giants || Hideki Irabu || New York Yankees
 * June|| Greg Maddux (5) || Atlanta Braves || Bartolo Colón || Cleveland Indians
 * July|| Chan Ho Park || Los Angeles Dodgers || David Cone (3) || New York Yankees
 * August|| Randy Johnson (3) || rowspan="2" | Houston Astros || Roger Clemens (12) || Toronto Blue Jays
 * September|| Randy Johnson (4) || Rick Helling || Texas Rangers
 * rowspan=6|1999
 * April|| John Smoltz (3) || Atlanta Braves || Pedro Martínez (2) || rowspan="3" | Boston Red Sox
 * May|| Curt Schilling || Philadelphia Phillies || Pedro Martínez (3)
 * June|| Al Leiter || New York Mets || Pedro Martínez (4)
 * July|| Randy Johnson (5) || Arizona Diamondbacks || Hideki Irabu (2) || rowspan="2" | New York Yankees
 * August|| Greg Maddux (6) || Atlanta Braves || Mariano Rivera
 * September|| Denny Neagle || Cincinnati Reds || Pedro Martínez (5) || Boston Red Sox
 * colspan="6" style="background-color:#DDEEFF"|
 * June|| Hideo Nomo || Los Angeles Dodgers || Kevin Appier (2) || Kansas City Royals
 * July|| Greg Maddux (3) || Atlanta Braves || Tim Wakefield || rowspan="2" | Boston Red Sox
 * August|| Sid Fernandez (2) || Philadelphia Phillies || Erik Hanson
 * September|| Greg Maddux (4) || rowspan="3" | Atlanta Braves || Norm Charlton || Seattle Mariners
 * rowspan=6|1996
 * April|| John Smoltz || Juan Guzmán || Toronto Blue Jays
 * May|| John Smoltz (2) || Charles Nagy || rowspan="2" | Cleveland Indians
 * June|| Jeff Fassero || rowspan="2" | Montreal Expos || Orel Hershiser (5)
 * July|| Jeff Fassero (2) || Pat Hentgen || rowspan="2" | Toronto Blue Jays
 * August|| Kevin Brown || Florida Marlins || Pat Hentgen (2)
 * September|| Hideo Nomo (2) || Los Angeles Dodgers || Charles Nagy (2) || Cleveland Indians
 * rowspan=6|1997
 * April|| Tom Glavine (3) || Atlanta Braves || Andy Pettitte || New York Yankees
 * May|| Bobby Jones || New York Mets || Roger Clemens (10) || Toronto Blue Jays
 * June|| Kent Mercker || Cincinnati Reds || Randy Johnson (2) || Seattle Mariners
 * July|| Darryl Kile (2) || Houston Astros || Chuck Finley (3) Brad Radke || Anaheim Angels Minnesota Twins
 * August|| Pedro Martínez || Montreal Expos || Roger Clemens (11) || Toronto Blue Jays
 * September|| Jeff Shaw || Cincinnati Reds || Jeff Fassero (3) || Seattle Mariners
 * rowspan=6|1998
 * April|| Tom Glavine (4) || Atlanta Braves || Chuck Finley (4) || Anaheim Angels
 * May|| Orel Hershiser (6) || San Francisco Giants || Hideki Irabu || New York Yankees
 * June|| Greg Maddux (5) || Atlanta Braves || Bartolo Colón || Cleveland Indians
 * July|| Chan Ho Park || Los Angeles Dodgers || David Cone (3) || New York Yankees
 * August|| Randy Johnson (3) || rowspan="2" | Houston Astros || Roger Clemens (12) || Toronto Blue Jays
 * September|| Randy Johnson (4) || Rick Helling || Texas Rangers
 * rowspan=6|1999
 * April|| John Smoltz (3) || Atlanta Braves || Pedro Martínez (2) || rowspan="3" | Boston Red Sox
 * May|| Curt Schilling || Philadelphia Phillies || Pedro Martínez (3)
 * June|| Al Leiter || New York Mets || Pedro Martínez (4)
 * July|| Randy Johnson (5) || Arizona Diamondbacks || Hideki Irabu (2) || rowspan="2" | New York Yankees
 * August|| Greg Maddux (6) || Atlanta Braves || Mariano Rivera
 * September|| Denny Neagle || Cincinnati Reds || Pedro Martínez (5) || Boston Red Sox
 * colspan="6" style="background-color:#DDEEFF"|
 * rowspan=6|1998
 * April|| Tom Glavine (4) || Atlanta Braves || Chuck Finley (4) || Anaheim Angels
 * May|| Orel Hershiser (6) || San Francisco Giants || Hideki Irabu || New York Yankees
 * June|| Greg Maddux (5) || Atlanta Braves || Bartolo Colón || Cleveland Indians
 * July|| Chan Ho Park || Los Angeles Dodgers || David Cone (3) || New York Yankees
 * August|| Randy Johnson (3) || rowspan="2" | Houston Astros || Roger Clemens (12) || Toronto Blue Jays
 * September|| Randy Johnson (4) || Rick Helling || Texas Rangers
 * rowspan=6|1999
 * April|| John Smoltz (3) || Atlanta Braves || Pedro Martínez (2) || rowspan="3" | Boston Red Sox
 * May|| Curt Schilling || Philadelphia Phillies || Pedro Martínez (3)
 * June|| Al Leiter || New York Mets || Pedro Martínez (4)
 * July|| Randy Johnson (5) || Arizona Diamondbacks || Hideki Irabu (2) || rowspan="2" | New York Yankees
 * August|| Greg Maddux (6) || Atlanta Braves || Mariano Rivera
 * September|| Denny Neagle || Cincinnati Reds || Pedro Martínez (5) || Boston Red Sox
 * colspan="6" style="background-color:#DDEEFF"|
 * April|| John Smoltz (3) || Atlanta Braves || Pedro Martínez (2) || rowspan="3" | Boston Red Sox
 * May|| Curt Schilling || Philadelphia Phillies || Pedro Martínez (3)
 * June|| Al Leiter || New York Mets || Pedro Martínez (4)
 * July|| Randy Johnson (5) || Arizona Diamondbacks || Hideki Irabu (2) || rowspan="2" | New York Yankees
 * August|| Greg Maddux (6) || Atlanta Braves || Mariano Rivera
 * September|| Denny Neagle || Cincinnati Reds || Pedro Martínez (5) || Boston Red Sox
 * colspan="6" style="background-color:#DDEEFF"|
 * August|| Greg Maddux (6) || Atlanta Braves || Mariano Rivera
 * September|| Denny Neagle || Cincinnati Reds || Pedro Martínez (5) || Boston Red Sox
 * colspan="6" style="background-color:#DDEEFF"|
 * September|| Denny Neagle || Cincinnati Reds || Pedro Martínez (5) || Boston Red Sox
 * colspan="6" style="background-color:#DDEEFF"|
 * colspan="6" style="background-color:#DDEEFF"|

2000 to 2009

 * rowspan=6|2000
 * April|| Randy Johnson (6) || Arizona Diamondbacks || Pedro Martínez (6) || Boston Red Sox
 * May|| Garrett Stephenson || St. Louis Cardinals || James Baldwin || rowspan="2" | Chicago White Sox
 * June|| Al Leiter (2) || New York Mets || Cal Eldred (3)
 * July|| Jeff D'Amico || Milwaukee Brewers || Roger Clemens (13) || New York Yankees
 * August|| Russ Ortiz || San Francisco Giants || Steve Sparks || Detroit Tigers
 * September|| Greg Maddux (7) || Atlanta Braves || Tim Hudson || Oakland Athletics
 * rowspan=6|2001
 * April|| Wade Miller || Houston Astros || Brad Radke (2) || Minnesota Twins
 * May|| Curt Schilling (2) || Arizona Diamondbacks || Pedro Martínez (7) || Boston Red Sox
 * June|| Greg Maddux (8) || rowspan="2" | Atlanta Braves || Roger Clemens (14) || New York Yankees
 * July|| Greg Maddux (9) || Mark Mulder || rowspan="3" | Oakland Athletics
 * August|| Javier Vázquez || Montreal Expos || Barry Zito
 * September|| Woody Williams || St. Louis Cardinals || Barry Zito (2)
 * rowspan=6|2002
 * April|| Randy Johnson (7) || rowspan="2" | Arizona Diamondbacks || Derek Lowe || Boston Red Sox
 * May|| Curt Schilling (3) || Bartolo Colón (2) || Cleveland Indians
 * June|| Éric Gagné || Los Angeles Dodgers || Mark Mulder (2) || Oakland Athletics
 * July|| Curt Schilling (4) || Arizona Diamondbacks || Pedro Martínez (8) || Boston Red Sox
 * August|| Roy Oswalt || Houston Astros || Cory Lidle || Oakland Athletics
 * September|| Randy Johnson (8) || Arizona Diamondbacks || Andy Pettitte (2) || New York Yankees
 * rowspan=6|2003
 * April|| Shawn Chacón || Colorado Rockies || Esteban Loaiza || Chicago White Sox
 * May|| Kevin Brown (2) || Los Angeles Dodgers || Roy Halladay || Toronto Blue Jays
 * June|| Dontrelle Willis || Florida Marlins || Freddy García || Seattle Mariners
 * July|| Liván Hernández || Montreal Expos || José Lima || Kansas City Royals
 * August|| Mark Prior || rowspan="2" | Chicago Cubs || Johan Santana || Minnesota Twins
 * September|| Mark Prior (2) || Roy Halladay (2) || Toronto Blue Jays
 * rowspan=6|2004
 * April|| Roger Clemens (15) || Houston Astros || Kevin Brown (3) || New York Yankees
 * May|| Jason Schmidt || San Francisco Giants || Mark Buehrle || Chicago White Sox
 * June|| Carl Pavano || Florida Marlins || Mark Mulder (3) || Oakland Athletics
 * July|| Russ Ortiz (2) || Atlanta Braves || Johan Santana (2) || rowspan="3" | Minnesota Twins
 * August|| Jake Peavy || San Diego Padres || Johan Santana (3)
 * September|| Carlos Zambrano || Chicago Cubs || Johan Santana (4)
 * rowspan=6|2005
 * April|| Dontrelle Willis (2) || Florida Marlins || Jon Garland || Chicago White Sox
 * May|| Trevor Hoffman || San Diego Padres || Kenny Rogers (2) || Texas Rangers
 * June|| Chad Cordero || Washington Nationals || Mark Buehrle (2) || Chicago White Sox
 * July|| Andy Pettitte (3) || Houston Astros || Barry Zito (3) || Oakland Athletics
 * August|| Noah Lowry || San Francisco Giants || Bartolo Colón (3) || Los Angeles Angels
 * September|| Andy Pettitte (4) || Houston Astros || José Contreras || rowspan="2" | Chicago White Sox
 * rowspan=6|2006
 * April|| Greg Maddux (10) || Chicago Cubs || José Contreras (2)
 * May|| Jason Schmidt (2) || San Francisco Giants || CC Sabathia || Cleveland Indians
 * June|| Chris Young || San Diego Padres || Johan Santana (5) || Minnesota Twins
 * July|| Carlos Zambrano (2) || Chicago Cubs || John Lackey || Los Angeles Angels
 * August|| Derek Lowe (2) || Los Angeles Dodgers || Esteban Loaiza (2) || Oakland Athletics
 * September|| Roy Oswalt (2) || Houston Astros || Johan Santana (6) || Minnesota Twins
 * rowspan=6|2007
 * April|| John Maine || New York Mets || Roy Halladay (3) || Toronto Blue Jays
 * May|| Jake Peavy (2) || San Diego Padres || Dan Haren || Oakland Athletics
 * June|| Ben Sheets || Milwaukee Brewers || J. J. Putz || Seattle Mariners
 * July|| Carlos Zambrano (3) || Chicago Cubs || Érik Bédard || Baltimore Orioles
 * August|| Jake Peavy (3) || rowspan="2" | San Diego Padres || Andy Pettitte (5) || New York Yankees
 * September|| Jake Peavy (4) || Fausto Carmona || rowspan="2" | Cleveland Indians
 * rowspan=6|2008
 * April|| Brandon Webb || Arizona Diamondbacks || Cliff Lee
 * May|| Todd Wellemeyer || St. Louis Cardinals || Scott Kazmir || Tampa Bay Rays
 * June|| Dan Haren (2) || Arizona Diamondbacks || John Lackey (2) || Los Angeles Angels
 * July|| CC Sabathia (2) || rowspan="2" | Milwaukee Brewers || Jon Lester || Boston Red Sox
 * August|| CC Sabathia (3) || Cliff Lee (2) || Cleveland Indians
 * September|| Johan Santana (7) || rowspan="2" | New York Mets || Jon Lester (2) || Boston Red Sox
 * rowspan=6|2009
 * April|| Johan Santana (8) || Zack Greinke || Kansas City Royals
 * May|| Trevor Hoffman (2) || Milwaukee Brewers || Justin Verlander || Detroit Tigers
 * June|| Tim Lincecum || San Francisco Giants || Félix Hernández || rowspan="2" | Seattle Mariners
 * July|| Wandy Rodríguez || Houston Astros || Jarrod Washburn
 * August|| Chris Carpenter || St. Louis Cardinals  || CC Sabathia (4) || New York Yankees
 * September|| Jair Jurrjens || Atlanta Braves  || Félix Hernández (2)  || Seattle Mariners
 * colspan="6" style="background-color:#DDEEFF"|
 * June|| Chad Cordero || Washington Nationals || Mark Buehrle (2) || Chicago White Sox
 * July|| Andy Pettitte (3) || Houston Astros || Barry Zito (3) || Oakland Athletics
 * August|| Noah Lowry || San Francisco Giants || Bartolo Colón (3) || Los Angeles Angels
 * September|| Andy Pettitte (4) || Houston Astros || José Contreras || rowspan="2" | Chicago White Sox
 * rowspan=6|2006
 * April|| Greg Maddux (10) || Chicago Cubs || José Contreras (2)
 * May|| Jason Schmidt (2) || San Francisco Giants || CC Sabathia || Cleveland Indians
 * June|| Chris Young || San Diego Padres || Johan Santana (5) || Minnesota Twins
 * July|| Carlos Zambrano (2) || Chicago Cubs || John Lackey || Los Angeles Angels
 * August|| Derek Lowe (2) || Los Angeles Dodgers || Esteban Loaiza (2) || Oakland Athletics
 * September|| Roy Oswalt (2) || Houston Astros || Johan Santana (6) || Minnesota Twins
 * rowspan=6|2007
 * April|| John Maine || New York Mets || Roy Halladay (3) || Toronto Blue Jays
 * May|| Jake Peavy (2) || San Diego Padres || Dan Haren || Oakland Athletics
 * June|| Ben Sheets || Milwaukee Brewers || J. J. Putz || Seattle Mariners
 * July|| Carlos Zambrano (3) || Chicago Cubs || Érik Bédard || Baltimore Orioles
 * August|| Jake Peavy (3) || rowspan="2" | San Diego Padres || Andy Pettitte (5) || New York Yankees
 * September|| Jake Peavy (4) || Fausto Carmona || rowspan="2" | Cleveland Indians
 * rowspan=6|2008
 * April|| Brandon Webb || Arizona Diamondbacks || Cliff Lee
 * May|| Todd Wellemeyer || St. Louis Cardinals || Scott Kazmir || Tampa Bay Rays
 * June|| Dan Haren (2) || Arizona Diamondbacks || John Lackey (2) || Los Angeles Angels
 * July|| CC Sabathia (2) || rowspan="2" | Milwaukee Brewers || Jon Lester || Boston Red Sox
 * August|| CC Sabathia (3) || Cliff Lee (2) || Cleveland Indians
 * September|| Johan Santana (7) || rowspan="2" | New York Mets || Jon Lester (2) || Boston Red Sox
 * rowspan=6|2009
 * April|| Johan Santana (8) || Zack Greinke || Kansas City Royals
 * May|| Trevor Hoffman (2) || Milwaukee Brewers || Justin Verlander || Detroit Tigers
 * June|| Tim Lincecum || San Francisco Giants || Félix Hernández || rowspan="2" | Seattle Mariners
 * July|| Wandy Rodríguez || Houston Astros || Jarrod Washburn
 * August|| Chris Carpenter || St. Louis Cardinals  || CC Sabathia (4) || New York Yankees
 * September|| Jair Jurrjens || Atlanta Braves  || Félix Hernández (2)  || Seattle Mariners
 * colspan="6" style="background-color:#DDEEFF"|
 * rowspan=6|2008
 * April|| Brandon Webb || Arizona Diamondbacks || Cliff Lee
 * May|| Todd Wellemeyer || St. Louis Cardinals || Scott Kazmir || Tampa Bay Rays
 * June|| Dan Haren (2) || Arizona Diamondbacks || John Lackey (2) || Los Angeles Angels
 * July|| CC Sabathia (2) || rowspan="2" | Milwaukee Brewers || Jon Lester || Boston Red Sox
 * August|| CC Sabathia (3) || Cliff Lee (2) || Cleveland Indians
 * September|| Johan Santana (7) || rowspan="2" | New York Mets || Jon Lester (2) || Boston Red Sox
 * rowspan=6|2009
 * April|| Johan Santana (8) || Zack Greinke || Kansas City Royals
 * May|| Trevor Hoffman (2) || Milwaukee Brewers || Justin Verlander || Detroit Tigers
 * June|| Tim Lincecum || San Francisco Giants || Félix Hernández || rowspan="2" | Seattle Mariners
 * July|| Wandy Rodríguez || Houston Astros || Jarrod Washburn
 * August|| Chris Carpenter || St. Louis Cardinals  || CC Sabathia (4) || New York Yankees
 * September|| Jair Jurrjens || Atlanta Braves  || Félix Hernández (2)  || Seattle Mariners
 * colspan="6" style="background-color:#DDEEFF"|
 * April|| Johan Santana (8) || Zack Greinke || Kansas City Royals
 * May|| Trevor Hoffman (2) || Milwaukee Brewers || Justin Verlander || Detroit Tigers
 * June|| Tim Lincecum || San Francisco Giants || Félix Hernández || rowspan="2" | Seattle Mariners
 * July|| Wandy Rodríguez || Houston Astros || Jarrod Washburn
 * August|| Chris Carpenter || St. Louis Cardinals  || CC Sabathia (4) || New York Yankees
 * September|| Jair Jurrjens || Atlanta Braves  || Félix Hernández (2)  || Seattle Mariners
 * colspan="6" style="background-color:#DDEEFF"|
 * August|| Chris Carpenter || St. Louis Cardinals  || CC Sabathia (4) || New York Yankees
 * September|| Jair Jurrjens || Atlanta Braves  || Félix Hernández (2)  || Seattle Mariners
 * colspan="6" style="background-color:#DDEEFF"|
 * September|| Jair Jurrjens || Atlanta Braves  || Félix Hernández (2)  || Seattle Mariners
 * colspan="6" style="background-color:#DDEEFF"|
 * colspan="6" style="background-color:#DDEEFF"|

2010 to 2019

 * rowspan=6|2010
 * April|| Ubaldo Jiménez || rowspan="2" | Colorado Rockies || Francisco Liriano || Minnesota Twins
 * May|| Ubaldo Jiménez (2) || Jon Lester (3) || Boston Red Sox
 * June|| Josh Johnson || Florida Marlins || Cliff Lee (3) || Seattle Mariners
 * July|| Roy Halladay (4) || Philadelphia Phillies || Gavin Floyd  || Chicago White Sox
 * August|| Tim Hudson (2) || rowspan="2" | Atlanta Braves || Clay Buchholz || Boston Red Sox
 * September|| Derek Lowe (3) || David Price || Tampa Bay Rays
 * rowspan=6|2011
 * April || Josh Johnson (2) || Florida Marlins || Jered Weaver || Los Angeles Angels
 * May || Jair Jurrjens (2) || Atlanta Braves || Jeremy Hellickson || Tampa Bay Rays
 * June || Cliff Lee (4) || Philadelphia Phillies || Justin Verlander (2) || Detroit Tigers
 * July || Clayton Kershaw || Los Angeles Dodgers || CC Sabathia (5) || New York Yankees
 * August || Cliff Lee (5) || Philadelphia Phillies || Ricky Romero || Toronto Blue Jays
 * September || Javier Vázquez (2) || Florida Marlins || Doug Fister || Detroit Tigers
 * rowspan=6|2012
 * April || Stephen Strasburg || rowspan="2" | Washington Nationals || Jake Peavy (5) || rowspan="2" | Chicago White Sox
 * May || Gio González || Chris Sale
 * June || R. A. Dickey || New York Mets || Matt Harrison || Texas Rangers
 * July || Jordan Zimmermann || Washington Nationals || Jason Vargas || rowspan="2" | Seattle Mariners
 * August || Kris Medlen || rowspan="2" | Atlanta Braves || Félix Hernández (3)
 * September || Kris Medlen (2) || Justin Verlander (3) || Detroit Tigers
 * rowspan=6|2013
 * April || Matt Harvey || New York Mets || Clay Buchholz (2) || Boston Red Sox
 * May || Patrick Corbin || Arizona Diamondbacks || Jason Vargas (2) || Los Angeles Angels
 * June || Adam Wainwright || St. Louis Cardinals || Bartolo Colón (4) || Oakland Athletics
 * July || Clayton Kershaw (2) || rowspan="2" | Los Angeles Dodgers || Chris Archer || Tampa Bay Rays
 * August || Zack Greinke (2) || Iván Nova || New York Yankees
 * September || Kris Medlen (3) || Atlanta Braves || Ubaldo Jiménez (3) || Cleveland Indians
 * rowspan=6|2014
 * April || José Fernández || Miami Marlins || Sonny Gray || Oakland Athletics
 * May || Madison Bumgarner || San Francisco Giants || Masahiro Tanaka || New York Yankees
 * June || Clayton Kershaw (3) || rowspan="2" | Los Angeles Dodgers || Félix Hernández (4) || Seattle Mariners
 * July || Clayton Kershaw (4) || Sonny Gray (2) || Oakland Athletics
 * August || Madison Bumgarner (2) || San Francisco Giants || Matt Shoemaker || Los Angeles Angels
 * September || Adam Wainwright (2) || St. Louis Cardinals || Corey Kluber || Cleveland Indians
 * rowspan=6|2015
 * April || Gerrit Cole || Pittsburgh Pirates || Dallas Keuchel || rowspan="2" | Houston Astros
 * May || Max Scherzer || rowspan="2" | Washington Nationals || Dallas Keuchel (2)
 * June || Max Scherzer (2) || Chris Sale (2) || Chicago White Sox
 * July || Clayton Kershaw (5) || Los Angeles Dodgers || Scott Kazmir (2) || Houston Astros/ Oakland Athletics
 * August || Jake Arrieta || rowspan="3" | Chicago Cubs || Dallas Keuchel (3) || Houston Astros
 * September || Jake Arrieta (2) || Cody Anderson || Cleveland Indians
 * rowspan=6|2016
 * April || Jake Arrieta (3) || Jordan Zimmermann (2) || Detroit Tigers
 * May || Clayton Kershaw (6) || Los Angeles Dodgers || Rich Hill || Oakland Athletics
 * June || Jon Lester (4) || Chicago Cubs || Danny Salazar || Cleveland Indians
 * July || Stephen Strasburg (2) || Washington Nationals || Justin Verlander (4) || Detroit Tigers
 * August || Kyle Hendricks || rowspan="2" | Chicago Cubs || Corey Kluber (2) || Cleveland Indians
 * September || Jon Lester (5) || Rick Porcello || Boston Red Sox
 * rowspan=6|2017
 * April || Iván Nova (2) || Pittsburgh Pirates || Dallas Keuchel (4) || rowspan="2" | Houston Astros
 * May || Alex Wood || Los Angeles Dodgers || Lance McCullers Jr.
 * June || Max Scherzer (3) || Washington Nationals || Corey Kluber (3) || Cleveland Indians
 * July || Rich Hill (2) || Los Angeles Dodgers || James Paxton || Seattle Mariners
 * August || Jake Arrieta (4) || Chicago Cubs || Corey Kluber (4) || rowspan="2" | Cleveland Indians
 * September || Stephen Strasburg (3) || rowspan="3" | Washington Nationals || Corey Kluber (5)
 * rowspan=6|2018
 * April || Max Scherzer (4) || Sean Manaea || Oakland Athletics
 * May || Max Scherzer (5) || Justin Verlander (5) || Houston Astros
 * June || Jon Lester (6) || Chicago Cubs || Chris Sale (3) || rowspan="2" | Boston Red Sox
 * July || Zack Greinke (3) || Arizona Diamondbacks || Chris Sale (4)
 * August || Cole Hamels || Chicago Cubs || Blake Snell || rowspan="3" | Tampa Bay Rays
 * September || Germán Márquez || Colorado Rockies || Blake Snell (2)
 * rowspan=6|2019
 * April || Luis Castillo|| Cincinnati Reds || Tyler Glasnow
 * May || Hyun-jin Ryu || Los Angeles Dodgers || Lucas Giolito || Chicago White Sox
 * June || Max Scherzer (6) || rowspan=2|Washington Nationals || Gerrit Cole (2) || rowspan="2" | Houston Astros
 * July || Stephen Strasburg (4) || Gerrit Cole (3)
 * August || Jack Flaherty || rowspan="2" | St. Louis Cardinals || Mike Clevinger || Cleveland Indians
 * September || Jack Flaherty (2) || Gerrit Cole (4) || Houston Astros
 * colspan="6" style="background-color:#DDEEFF"|
 * June || Max Scherzer (2) || Chris Sale (2) || Chicago White Sox
 * July || Clayton Kershaw (5) || Los Angeles Dodgers || Scott Kazmir (2) || Houston Astros/ Oakland Athletics
 * August || Jake Arrieta || rowspan="3" | Chicago Cubs || Dallas Keuchel (3) || Houston Astros
 * September || Jake Arrieta (2) || Cody Anderson || Cleveland Indians
 * rowspan=6|2016
 * April || Jake Arrieta (3) || Jordan Zimmermann (2) || Detroit Tigers
 * May || Clayton Kershaw (6) || Los Angeles Dodgers || Rich Hill || Oakland Athletics
 * June || Jon Lester (4) || Chicago Cubs || Danny Salazar || Cleveland Indians
 * July || Stephen Strasburg (2) || Washington Nationals || Justin Verlander (4) || Detroit Tigers
 * August || Kyle Hendricks || rowspan="2" | Chicago Cubs || Corey Kluber (2) || Cleveland Indians
 * September || Jon Lester (5) || Rick Porcello || Boston Red Sox
 * rowspan=6|2017
 * April || Iván Nova (2) || Pittsburgh Pirates || Dallas Keuchel (4) || rowspan="2" | Houston Astros
 * May || Alex Wood || Los Angeles Dodgers || Lance McCullers Jr.
 * June || Max Scherzer (3) || Washington Nationals || Corey Kluber (3) || Cleveland Indians
 * July || Rich Hill (2) || Los Angeles Dodgers || James Paxton || Seattle Mariners
 * August || Jake Arrieta (4) || Chicago Cubs || Corey Kluber (4) || rowspan="2" | Cleveland Indians
 * September || Stephen Strasburg (3) || rowspan="3" | Washington Nationals || Corey Kluber (5)
 * rowspan=6|2018
 * April || Max Scherzer (4) || Sean Manaea || Oakland Athletics
 * May || Max Scherzer (5) || Justin Verlander (5) || Houston Astros
 * June || Jon Lester (6) || Chicago Cubs || Chris Sale (3) || rowspan="2" | Boston Red Sox
 * July || Zack Greinke (3) || Arizona Diamondbacks || Chris Sale (4)
 * August || Cole Hamels || Chicago Cubs || Blake Snell || rowspan="3" | Tampa Bay Rays
 * September || Germán Márquez || Colorado Rockies || Blake Snell (2)
 * rowspan=6|2019
 * April || Luis Castillo|| Cincinnati Reds || Tyler Glasnow
 * May || Hyun-jin Ryu || Los Angeles Dodgers || Lucas Giolito || Chicago White Sox
 * June || Max Scherzer (6) || rowspan=2|Washington Nationals || Gerrit Cole (2) || rowspan="2" | Houston Astros
 * July || Stephen Strasburg (4) || Gerrit Cole (3)
 * August || Jack Flaherty || rowspan="2" | St. Louis Cardinals || Mike Clevinger || Cleveland Indians
 * September || Jack Flaherty (2) || Gerrit Cole (4) || Houston Astros
 * colspan="6" style="background-color:#DDEEFF"|
 * rowspan=6|2018
 * April || Max Scherzer (4) || Sean Manaea || Oakland Athletics
 * May || Max Scherzer (5) || Justin Verlander (5) || Houston Astros
 * June || Jon Lester (6) || Chicago Cubs || Chris Sale (3) || rowspan="2" | Boston Red Sox
 * July || Zack Greinke (3) || Arizona Diamondbacks || Chris Sale (4)
 * August || Cole Hamels || Chicago Cubs || Blake Snell || rowspan="3" | Tampa Bay Rays
 * September || Germán Márquez || Colorado Rockies || Blake Snell (2)
 * rowspan=6|2019
 * April || Luis Castillo|| Cincinnati Reds || Tyler Glasnow
 * May || Hyun-jin Ryu || Los Angeles Dodgers || Lucas Giolito || Chicago White Sox
 * June || Max Scherzer (6) || rowspan=2|Washington Nationals || Gerrit Cole (2) || rowspan="2" | Houston Astros
 * July || Stephen Strasburg (4) || Gerrit Cole (3)
 * August || Jack Flaherty || rowspan="2" | St. Louis Cardinals || Mike Clevinger || Cleveland Indians
 * September || Jack Flaherty (2) || Gerrit Cole (4) || Houston Astros
 * colspan="6" style="background-color:#DDEEFF"|
 * April || Luis Castillo|| Cincinnati Reds || Tyler Glasnow
 * May || Hyun-jin Ryu || Los Angeles Dodgers || Lucas Giolito || Chicago White Sox
 * June || Max Scherzer (6) || rowspan=2|Washington Nationals || Gerrit Cole (2) || rowspan="2" | Houston Astros
 * July || Stephen Strasburg (4) || Gerrit Cole (3)
 * August || Jack Flaherty || rowspan="2" | St. Louis Cardinals || Mike Clevinger || Cleveland Indians
 * September || Jack Flaherty (2) || Gerrit Cole (4) || Houston Astros
 * colspan="6" style="background-color:#DDEEFF"|
 * August || Jack Flaherty || rowspan="2" | St. Louis Cardinals || Mike Clevinger || Cleveland Indians
 * September || Jack Flaherty (2) || Gerrit Cole (4) || Houston Astros
 * colspan="6" style="background-color:#DDEEFF"|
 * September || Jack Flaherty (2) || Gerrit Cole (4) || Houston Astros
 * colspan="6" style="background-color:#DDEEFF"|
 * colspan="6" style="background-color:#DDEEFF"|

2020 to present
Source:
 * rowspan=2|2020
 * July/August || Yu Darvish || Chicago Cubs || Shane Bieber || Cleveland Indians
 * September || Trevor Bauer || Cincinnati Reds || Chris Bassitt || Oakland Athletics
 * rowspan=6|2021
 * April || Jacob deGrom || New York Mets || Gerrit Cole (5) || New York Yankees
 * May || Kevin Gausman || San Francisco Giants || Rich Hill (3) || Tampa Bay Rays
 * June || Jacob deGrom (2) || New York Mets || Sean Manaea (2) || Oakland Athletics
 * July || Walker Buehler || Los Angeles Dodgers || Jameson Taillon || New York Yankees
 * August || Adam Wainwright (3) || St. Louis Cardinals || Robbie Ray || Toronto Blue Jays
 * September || Max Fried || Atlanta Braves || Frankie Montas || Oakland Athletics
 * rowspan=6|2022
 * April || Pablo Lopez || Miami Marlins || Logan Gilbert || Seattle Mariners
 * May || Zack Wheeler || Philadelphia Phillies || Martín Pérez || Texas Rangers
 * June || Sandy Alcántara|| Miami Marlins || Dylan Cease || rowspan=2|Chicago White Sox
 * July || Merrill Kelly || rowspan=2|Arizona Diamondbacks || Dylan Cease (2)
 * August || Zac Gallen || Drew Rasmussen || Tampa Bay Rays
 * September || Yu Darvish (2) || San Diego Padres || Alek Manoah || Toronto Blue Jays
 * rowspan=6|2023
 * April || Clayton Kershaw (7) || Los Angeles Dodgers || Gerrit Cole (6) || New York Yankees
 * May || Michael Wacha || rowspan="2" | San Diego Padres || Nathan Eovaldi || Texas Rangers
 * June || Blake Snell (3) || James Paxton (2) || Boston Red Sox
 * July || Corbin Burnes || Milwaukee Brewers || Tyler Glasnow (2)|| Tampa Bay Rays
 * August || Freddy Peralta || Milwaukee Brewers || Cole Ragans || Kansas City Royals
 * September || Blake Snell (4) || San Diego Padres || Tarik Skubal || Detroit Tigers
 * rowspan=6|2024
 * April || Ranger Suárez || Philadelphia Phillies || José Berríos || Toronto Blue Jays
 * May || Chris Sale (5) || Atlanta Braves || Luis Gil || New York Yankees
 * June || Cristopher Sánchez || Philadelphia Phillies || Garrett Crochet || Chicago White Sox
 * July || || || ||
 * August || || || ||
 * September || || || ||
 * }
 * rowspan=6|2023
 * April || Clayton Kershaw (7) || Los Angeles Dodgers || Gerrit Cole (6) || New York Yankees
 * May || Michael Wacha || rowspan="2" | San Diego Padres || Nathan Eovaldi || Texas Rangers
 * June || Blake Snell (3) || James Paxton (2) || Boston Red Sox
 * July || Corbin Burnes || Milwaukee Brewers || Tyler Glasnow (2)|| Tampa Bay Rays
 * August || Freddy Peralta || Milwaukee Brewers || Cole Ragans || Kansas City Royals
 * September || Blake Snell (4) || San Diego Padres || Tarik Skubal || Detroit Tigers
 * rowspan=6|2024
 * April || Ranger Suárez || Philadelphia Phillies || José Berríos || Toronto Blue Jays
 * May || Chris Sale (5) || Atlanta Braves || Luis Gil || New York Yankees
 * June || Cristopher Sánchez || Philadelphia Phillies || Garrett Crochet || Chicago White Sox
 * July || || || ||
 * August || || || ||
 * September || || || ||
 * }
 * May || Chris Sale (5) || Atlanta Braves || Luis Gil || New York Yankees
 * June || Cristopher Sánchez || Philadelphia Phillies || Garrett Crochet || Chicago White Sox
 * July || || || ||
 * August || || || ||
 * September || || || ||
 * }
 * August || || || ||
 * September || || || ||
 * }
 * September || || || ||
 * }