1898 in baseball

Champions

 * National League: Boston Beaneaters

National League statistical leaders

 * Batting average: Willie Keeler – .385
 * Home runs: Jimmy Collins – 15
 * Runs batted in: Nap Lajoie – 127
 * Wins: Kid Nichols – 31
 * Earned run average: Clark Griffith – 1.88
 * Strikeouts: Cy Seymour – 239

Events

 * April 3 – Jack Clements, now with St. Louis, is the first southpaw to catch in 1,000 MLB games.
 * April 21 – Philadelphia Phillies pitcher Bill Duggleby hits a grand slam in his first major league at-bat. No one else will accomplish that feat until Jeremy Hermida in 2005.
 * April 22 – This day in baseball would see two no-hitters. First, Ted Breitenstein would throw the second no-hitter of his career, as the Cincinnati Reds would defeat the Pittsburgh Pirates, 11–0. Meanwhile, Jay Hughes would toss a no-hitter for the Baltimore Orioles in a 5–0 win over the Boston Beaneaters. This is the first time in Major League history that two no-hitters would be thrown on the same day.  It would not happen again until Dave Stewart and Fernando Valenzuela turned the trick on June 29, 1990.
 * May 10 - The Washington Senators released catcher Roger Bresnahan.
 * July 5 – Lizzie Arlington becomes the first woman to play in organized baseball as she pitches for the Reading Coal Heavers of the Atlantic League. She hurled the final inning of that game and gave up two hits and a walk but did not allow a run. Some claim she also pitched in exhibition games after being hired by Ed Barrow, the league's president.
 * July 8 – Red Donahue tosses a no-hitter in a 5–0 Philadelphia Phillies victory over the Baltimore Orioles.
 * August 21 – In the second game of a doubleheader, Walter Thornton of the Chicago Orphans pitches a 2–0 no-hitter against the Brooklyn Bridegrooms.
 * December 1 – New York Giants president Andrew Freedman renews his team lease on the Polo Grounds for the next 10 years.

January

 * January 5 – Riggs Stephenson
 * January 10 – Fats Jenkins
 * January 10 – Ed Stauffer
 * January 11 – Gene Lansing
 * January 12 – George Knothe
 * January 12 – Rip Wade
 * January 14 – Dick Wheeler
 * January 18 – John Woods
 * January 21 – John Mohardt
 * January 23 – Speed Walker
 * January 24 – Cliff Heathcote
 * January 28 – Jim Bishop
 * January 28 – Bill Snyder
 * January 29 – Dick Burrus
 * January 31 – Webb Schultz

February

 * February 1 – Bud Messenger
 * February 4 – Johnny Mann
 * February 4 – John Perrin
 * February 9 – Chink Taylor
 * February 15 – Bobby LaMotte
 * February 19 – Uke Clanton
 * February 26 – Frank Callaway
 * February 26 – Butch Glass
 * February 26 – Lee Thompson
 * February 28 – Jake Miller

March

 * March 2 – Rip Wheeler
 * March 5 – Bill Grevell
 * March 6 – Roy Hansen
 * March 8 – Phil Bedgood
 * March 10 – Frank Loftus
 * March 15 – Hal Kime
 * March 15 – Rosy Ryan
 * March 22 – Luke Urban
 * March 28 – Moses J. Yellow Horse

April

 * April 10 – Tom Jenkins
 * April 14 – Jess Doyle
 * April 20 – Johnny Wertz
 * April 22 – Tom Long
 * April 23 – Charlie Dorman
 * April 24 – Andy Cooper
 * April 25 – Red Thomas
 * April 29 – Tom Glass
 * April 29 – Dutch Levsen

May

 * May 2 – Lucas Turk
 * May 6 – Dewey Metivier
 * May 6 – Al Wingo
 * May 9 – George Durning
 * May 12 – Earl McNeely
 * May 18 – Harvey MacDonald
 * May 24 – Dennis Burns
 * May 26 – Milt Steengrafe
 * May 28 – Claude Davenport

June

 * June 1 – Duke Sedgwick
 * June 14 – Bill Doran
 * June 20 – Duke Shirey
 * June 21 – Spencer Adams
 * June 29 – Jimmie Long

July

 * July 4 – Bobby Murray
 * July 10 – Dick Lundy
 * July 11 – Joe Batchelder
 * July 14 – Happy Chandler
 * July 22 – Joe Bratcher
 * July 27 – Benny Bengough
 * July 27 – Zack Taylor
 * July 28 – Paul McCullough

August

 * August 2 – Emmett Bowles
 * August 7 – Oscar Levis
 * August 8 – John Slappey
 * August 14 – Bill Clowers
 * August 17 – Bill Pertica
 * August 18 – Hal Goldsmith
 * August 18 – Bill Knowlton
 * August 24 – John Monroe
 * August 27 – Clarence Fisher
 * August 27 – Frank Wayenberg
 * August 28 – Charlie Grimm
 * August 29 – Hap Collard
 * August 30 – Kiki Cuyler
 * August 31 – Sarge Connally

September

 * September 1 – Ed Goebel
 * September 9 – Frankie Frisch
 * September 13 – Curt Fullerton
 * September 16 – Al Lefevre
 * September 18 – George Uhle
 * September 20 – Chuck Dressen
 * September 23 – Hod Lisenbee
 * September 23 – George Murray
 * September 27 – Bill Clarkson
 * September 29 – Joe Matthews

October

 * October 4 – Frank McCue
 * October 7 – Joe Giard
 * October 9 – Joe Sewell
 * October 17 – Clint Blume
 * October 26 – Roy Moore
 * October 30 – Jesse Fowler
 * October 30 – Bill Terry

November

 * November 3 – Homer Summa
 * November 7 – Mike Pasquella
 * November 11 – Pie Traynor
 * November 14 – Claude Willoughby
 * November 15 – Broadway Jones
 * November 19 – Harry Courtney
 * November 20 – Tim McNamara
 * November 21 – Walter Zink
 * November 26 – John Kerr
 * November 29 – Red Shea
 * November 30 – Lou Bauer
 * November 30 – Firpo Marberry

December

 * December 1 – Charlie High
 * December 2 – Hal Leathers
 * December 4 – Doc Bass
 * December 14 – Maurice Archdeacon
 * December 16 – Dee Cousineau
 * December 16 – Frank Shellenback
 * December 17 – Red Lutz
 * December 17 – Oscar Tuero
 * December 19 – Lou Koupal
 * December 23 – Hinkey Haines
 * December 25 – Earl Kunz
 * December 28 – Bill Kelly

Deaths

 * January 4 – Charlie Byrne, 54, co-founder of the franchise that became the Brooklyn Dodgers (1883), manager of the "Brooklyns" from June 15, 1885 through 1887, and co-owner until his death.
 * January 28 – Ned Connor, 48, utility player for the 1871 New York Haymakers.
 * February 25 – Tom Power (?), first baseman.
 * March 29 – Tony Hellman, 36, catcher.
 * April 13 – Charlie McCullough, 32, pitcher.
 * April 14 – Jiggs Parrott, 26, infielder.
 * April 17 – Bobby Mathews, 46, pitcher who won 297 games, 131 of them in the National Association, in a career that ran from 1871 to 1887, including the first professional league game victory in 1871, and consecutive 30-win seasons for the Philadelphia Athletics from 1883 to 1885.
 * June 4 – Harry Smith, 42, infielder.
 * June 23 – William Rexter, 48, outfielder.
 * August 2 – Val Robinson, 50, outfielder.
 * September 21 – Bill Tierney, 40, first baseman and outfielder.
 * October 5 – John Richmond, 43, shortstop and center fielder for seven teams during his eight seasons from 1875 to 1885.
 * October 20 – Curry Foley, 42, Irish outfielder/first baseman/pitcher who played from 1879 through 1883 for the Boston Red Caps and Buffalo Bisons National League teams, and the first major league player ever to hit for the cycle (May 25, 1882).
 * November 21 – Bill Hague, 46, third baseman from 1875 to 1879.
 * November 23 – Mother Watson, 33, pitcher.
 * December 27 – John Sneed, 37, outfielder.
 * December 30 – Bill Stearns, 45, pitcher for several National Association teams from 1871 to 1875.
 * December 31 – Martin Duke, 31, pitcher.