1989 Oakland Athletics season

The 1989 Oakland Athletics season saw the A's finish in first place in the American League West, with a record of 99 wins and 63 losses, seven games in front of the Kansas City Royals. Oakland dominated the American League, earning their second consecutive AL West title, as well as marking the second straight year in which they finished with the best record in all of baseball. A's pitcher Dave Stewart recorded his third straight season of earning 20 or more wins while Rickey Henderson put on a dazzling offensive performance in the postseason as he approached the prospects of landing a three million dollar contract for the following season. The team defeated the Toronto Blue Jays in five games in the ALCS, then swept their cross-Bay rivals, the San Francisco Giants, in an earthquake-marred World Series. The Athletics looked to be a future dynasty by the close of the 1989 season.

Offseason

 * November 28, 1988: Mike Moore signs as a free agent with the Oakland Athletics.
 * November 30, 1988: Billy Beane was signed as a free agent with the Oakland Athletics.

Regular season

 * Ken Griffey Jr. made his major league baseball debut on April 3, 1989, in a game against the Oakland Athletics.
 * On August 22, 1989, Nolan Ryan struck out Rickey Henderson for the 5,000th strikeout in his career.

Notable transactions

 * April 6, 1989: Troy Afenir was traded by the Houston Astros to the Oakland Athletics for Matt Sinatro.
 * April 6, 1989: Mike Norris was signed as a free agent with the Oakland Athletics.
 * May 27, 1989: Jamie Quirk was signed as a free agent with the Oakland Athletics.
 * June 5, 1989: Mike Mohler was drafted by the Oakland Athletics in the 42nd round of the 1989 amateur draft. Player signed August 18, 1989.
 * June 21, 1989: Rickey Henderson was traded by the New York Yankees to the Oakland Athletics for Greg Cadaret, Eric Plunk, and Luis Polonia.
 * July 24, 1989: Jamie Quirk was released by the Oakland Athletics.
 * July 31, 1989: Glenn Hubbard was released by the Oakland Athletics.
 * August 30, 1989: Ken Phelps was traded by the New York Yankees to the Oakland Athletics for Scott Holcomb (minors).

Starters by position
''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters
''Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Starting pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Other pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers
Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts

Game 1
October 3, 1989, at Oakland–Alameda County Coliseum

Game 2
October 4, 1989, at Oakland–Alameda County Coliseum

Game 3
October 6, 1989, at SkyDome

Game 4
October 7, 1989, at SkyDome

Game 5
October 8, 1989, at SkyDome

World Series
AL Oakland Athletics (4) vs. NL San Francisco Giants (0)

Awards and honors

 * Rickey Henderson, ALCS Most Valuable Player
 * Dave Stewart, World Series MVP

All-Star Game
 * Dave Stewart, pitcher
 * Terry Steinbach, catcher, starter
 * Mark McGwire, first Base, starter
 * José Canseco, outfield, reserve
 * Mike Moore, pitcher, reserve
 * Tony La Russa, manager

Team leaders

 * Games – Dave Henderson (152)
 * At-Bats – Dave Henderson (579)
 * Runs – Carney Lansford (81)
 * Hits – Carney Lansford (185)
 * Doubles – Carney Lansford (28)
 * Triples – Tony Phillips (6)
 * Home Runs – Mark McGwire (33)
 * Runs Batted In – Dave Parker
 * Walks – Mark McGwire  (83)
 * Batting average – Carney Lansford (.336)
 * On Base Percentage – Rickey Henderson (.425)
 * Slugging Average – José Canseco (.542)
 * Stolen Bases – Rickey Henderson (52)
 * Wins – Dave Stewart (21)
 * Innings Pitched – Dave Stewart (257.2)
 * Earned Run Average – Mike Moore (2.61)
 * Strikeouts – Mike Moore (172)