1921 in baseball

A loose confederation of teams were gathered in the East to compete with the West, however East teams did not organize a formal league as the West did.

• January 23- The Chicago Cubs release First Baseman Fred Merkle.
• January 25- The Chicago Cubs released infielder Buck Herzog. Herzog never again played in the major leagues.

• March 12 – Baseball commissioner Kenesaw Mountain Landis suspends eight members of the Chicago White Sox club for their alleged involvement in the fixing of the 1919 World Series. The group includes outfielder Shoeless Joe Jackson, who batted .375 in the Series. Others players banned are Eddie Cicotte, Happy Felsch, Chick Gandil, Fred McMullin, Swede Risberg, Buck Weaver and Lefty Williams. None of them will ever play in organized baseball again.

• April 13 :
  • George Toporcer debuts at second base for the St. Louis Cardinals. Nicknamed "Specs", he is the first position player to wear eyeglasses on the field.
  • In the season opener, New York Yankees left fielder Babe Ruth goes five-for-five with two doubles, two runs batted in and a run scored to lead the Yankees to an 11–1 victory over the Philadelphia Athletics at the Polo Grounds.
• April 24 – Shortstop Ralph Miller hits a single and draws a walk, and is the only base runner as the Philadelphia Phillies are one-hit by Phil Douglas and the New York Giants.

• May 15- Goose Goslin makes his MLB debut for the Washington Senators, going 1 for 3. Goslin would go one to become one of the few star players for the franchise and eventually be inducted into the baseball hall of fame.
• May 22 – In their first meeting of the season, the Pittsburgh Pirates defeat the New York Giants 8–6 at the Polo Grounds, to improve their record to 25–6 and to increase their lead over the second place Giants to 4.5 games. After trailing for most of the game, the Pirates scored twice in the eighth and six times in the ninth.
• May 30 – There are eight doubleheaders on the major league schedule, with all four NL contests resulting in a sweep; the Pittsburgh Pirates sweep the Chicago Cubs at Forbes Field, the New York Giants sweep the Philadelphia Phillies at the Polo Grounds, the St. Louis Cardinals sweep the Cincinnati Reds at Redland Field and the Boston Braves sweep the Brooklyn Dodgers at Braves Field. Meanwhile, in the American League, the Boston Red Sox are swept by the A's in Philadelphia, and the St. Louis Browns and Chicago White Sox split a pair at Comiskey Park, the Cleveland Indians and Detroit Tigers split a pair at Navin Field, and the New York Yankees and Washington Senators split a pair at Griffith Stadium. Highlights of the doubleheaders include a two-hitter by the Senators' George Mogridge, and a sixteen inning marathon between the Braves and Dodgers.

• June 13 - Babe Ruth pitches the first five innings and hit two home runs in an 11-8 victory over The Detroit Tigers.

• July 8th - Tigers right fielder Harry Heilmann hits a 610 foot home run
• July 12 – Babe Ruth hits his 33rd and 34th home run of the season. His 33rd home run gave him 136 career home runs, tying Roger Connor's all-time mark. His 34th home run makes him the all-time home run king, a title he will hold until 1974.

• August 9 – The St. Louis Browns defeat the Washington Senators 8–6 in nineteen innings. Dixie Davis pitches all nineteen innings for St. Louis.
• August 12 – Philadelphia Phillies pitcher George Smith gives up twelve hits and still hurling a shutout as the Phillies beat the Boston Braves 4–0.
• August 19 – Ty Cobb of the Detroit Tigers becomes the fourth player with 3000 career hits.
• August 27 – With a 3–1 victory at the Polo Grounds, the New York Giants complete a five-game sweep of the visiting Pittsburgh Pirates to move within 2.5 games of first place Pittsburgh. The Giants out scored the Pirates 27–6 in the series.

• September 9 – The Detroit Tigers and Chicago White Sox lock up in a slugfest at Comiskey Park. The Tigers collect twenty hits and six walks on their way to scoring fifteen runs. However, the White Sox score twenty runs on 22 hits, including a home run by Earl Sheely.
• September 16
  • In the first game of a crucial three game series for first place in the National League, the New York Giants' Fred Toney holds the Pittsburgh Pirates to two hits in the Giants' 5–0 victory.
  • Hall of Famer Goose Goslin makes his major league debut in the Washington Senators' 2–0 loss to the Cleveland Indians.
• September 17 – The New York Giants complete a ten-game winning streak that sees them go from a half game back of the Pittsburgh Pirates in the National League to first place, 4.5 games up.
• September 20 – With a 4–2 victory over the Detroit Tigers, and a 7–4 loss by the Cleveland Indians at the hands of the Boston Red Sox, the New York Yankees capture first place in the American League, and hold it for the remainder of the season.
• September 25 – The New York Yankees defeat the Cleveland Indians 21–7. Surprisingly, none of the 21 runs scored are driven in by Babe Ruth, who goes on to compile one of the greatest single seasons of batting in Major League baseball history by hitting 59 home runs, driving in 171 runs, scoring 177 runs with 204 hits for a .378 batting average in only 540 At-Bats. His On-base percentage for the season is .510 and his slugging percentage is an astounding .846 mark. Ruth's 59 home runs are more than the other seven American League team home run totals combined.
• September 29 – Future Hall of Fame outfielder Kiki Cuyler makes his major league debut with the Pittsburgh Pirates. He is held hitless in three at-bats by St. Louis Cardinals pitcher Bill Sherdel.

• October 2 – The Philadelphia Athletics lose 11–6 to the Washington Senators for their 100th loss of the season, giving both Philadelphia teams 100 losses for the season.
• October 5 – The New York Yankees defeat the New York Giants 3–0 in the first World Series game in franchise history. The Series is the first to be broadcast on radio. Announcer Thomas Cowan recreated the game over Westinghouse-owned WJZ in Newark, listening to phoned-in reports from the stadium.
• October 6 – The Yankees defeat the Giants in the second game of the World Series by the same score of the first game, 3–0.
• October 7 – After having been outscored 10–0 in the World season, and falling behind 4–0 to the Yankees in game three, the Giants explode for thirteen runs, and defeat the Yankees 13–5.
• October 9 – The New York Giants even the 1921 World Series at two games apiece with a 4–2 victory. Babe Ruth homers in the bottom of the ninth.
• October 10 – Babe Ruth catches the New York Giants' infield off guard as the Yankee slugger bunts his way on to lead off the fourth inning. The strategy works, as Ruth scores the winning run in the Yankees' 3–1 victory.
• October 11 – The New York Giants battle back from 3–0 and 5–3 deficits to beat the Yankees 8–5 in game six of the World Series.
• October 12 – A costly error by second baseman Aaron Ward on a Johnny Rawlings ground ball leads to an unearned run, and is the difference in the Giants' 2–1 victory in game seven of the World Series.
• October 13 – The New York Giants defeat the New York Yankees, 1–0, in Game eight of the World Series to capture their second World Championship, five games to three. For the first time in World Series play, all games were held at one site: the Polo Grounds in New York, with the home team alternating. The Yankees sub-leased the Polo Grounds from the New York Giants from 1913 through 1922.

• January 1 – Royce Lint
• January 1 – Doris Tetzlaff
• January 3 – Lucella MacLean
• January 7 – Ted Beard
• January 8 – Herb Conyers
• January 8 – Marv Rickert
• January 8 – Johnny Tobin
• January 11 – Al Kvasnak
• January 19 – Mary Louise Lester
• January 21 – Ken Polivka
• January 28 – Julio Moreno

• February 1 – Dave Madison
• February 3 – Red Durrett
• February 8 – Hoot Evers
• February 8 – Willard Marshall
• February 12 – Don Bollweg
• February 13 – Pete Castiglione
• February 17 – Muriel Coben
• February 17 – Doyle Lade
• February 20 – Jack Robinson
• February 25 – Andy Pafko

• March 1 – Howie Fox
• March 1 – Art Frantz
• March 1 – Frank Rosso
• March 2 – Dick Starr
• March 3 – Roy Nichols
• March 5 – Elmer Valo
• March 7 – Les Fusselman
• March 10 – James Atkins
• March 10 – Johnny Blatnik
• March 10 – George Elder
• March 13 – Joe Rossi
• March 14 – Bill Kennedy
• March 20 – Bill Peterman
• March 22 – George Crowe
• March 29 – Ferris Fain
• March 30 – Dick Fowler

• April 1 – Red Murff
• April 3 – Dick Conger
• April 5 – Bobby Hogue
• April 7 – Frank Seward
• April 8 – Dee Sanders
• April 9 – Charlie Mead
• April 10 – Chuck Connors
• April 11 – Jim Hearn
• April 21 – Vivian Anderson
• April 21 – Bob Rinker
• April 23 – Warren Spahn
• April 26 – Gene Lambert
• April 27 – Mary Reynolds

• May 4 – Larry Drake
• May 6 – Bob Chesnes
• May 6 – Dick Wakefield
• May 18 – John Fick
• May 19 – John Carden
• May 20 – Hal Newhouser
• May 20 – Earl Rapp
• May 23 – Bill Drescher
• May 24 – Clancy Smyres

• June 7 – Bill McCahan
• June 9 – Ray Shore
• June 10 – Al Verdel
• June 13 – Nancy Warren
• June 17 – Dave Pope
• June 19 – Clara Cook
• June 23 – Ed Redys
• June 26 – Howie Pollet
• June 27 – Hank Behrman
• June 27 – Lou Kretlow
• June 28 – Steve Filipowicz
• June 30 – Jack Albright
• June 30 – Joe Stephenson

• July 5 – Al Kozar
• July 5 – Guillermo Vento
• July 7 – Johnny Van Cuyk
• July 11 – Hal Gregg
• July 13 – Harry Dorish
• July 17 – Tex Hoyle
• July 22 – Al LaMacchia
• July 22 – Jim Rivera
• July 24 – Clint Conatser
• July 25 – Marv Rackley
• July 25 – Sandy Ullrich
• July 26 – Tom Saffell
• July 28 – Ben Steiner
• July 29 – Jim LaMarque

• August 1 – Ray Hamrick
• August 3 – Joe Lafata
• August 5 – Anita Foss
• August 5 – Ebba St. Claire
• August 12 – Lefty Wallace
• August 18 – Alice DeCambra
• August 21 – Lou Knerr
• August 23 – Dale Mitchell
• August 25 – Al Jurisich
• August 27 – Nick Picciuto
• August 28 – Cliff Aberson
• August 28 – Bill Bradford
• August 31 – Chub Feeney

• September 1 – Joe Erautt
• September 2 – Josephine Lenard
• September 5 – Vince Shupe
• September 6 – Jack Phillips
• September 19 – Clara Chiano
• September 21 – John McHale
• September 24 – Charlene Pryer
• September 24 – Clyde Vollmer
• September 26 – John H. Johnson
• September 26 – Clarence Maddern
• September 30 – Eddie McGah

• October 2 – Ralph Weigel
• October 7 – Red Adams
• October 7 – Charlie Fox
• October 7 – Hank Presswood
• October 7 – Al Sima
• October 10 – Hank Riebe
• October 16 – Matt Batts
• October 17 – Ken Brondell
• October 30 – Ted Abernathy
• October 30 – Chet Kehn

• November 3 – Wally Flager
• November 5 – Mike Goliat
• November 18 – Les Layton
• November 19 – Roy Campanella
• November 20 – Neill Sheridan
• November 21 – Janet Anderson
• November 26 – Jodie Beeler
• November 26 – Mickey McGowan

• December 1 – Bob Savage
• December 5 – Dave Ferriss
• December 9 – Chuck Kress
• December 12 – Bill Howerton
• December 14 – Bobby Adams
• December 23 – Marge Callaghan
• December 27 – Lucille Colacito
• December 28 – Nelson Burbrink

• January 1 – George Winkleman
• January 1 – Dead Ball Era
• January 24 – Laurie Reis
• January 29 – Burt Hart
• February 11 – John Cullen
• February 13 – Barney McLaughlin
• February 14 – Jumbo Davis, 59, third baseman for seven seasons from 1884 to 1891.

• March 21 – Tom Vickery
• March 24 – Larry McLean
• March 25 – Harry Arndt
• March 30 – Frank Bancroft, 74, manager who won 1884 championship with Providence Grays, also managed six other teams; introduced baseball to Cuba in 1879, and was Reds executive for 30 years.
• March 31 – John Fitzgerald, 50, pitcher for the 1891 Boston Reds.
• April 3 – Pop Corkhill
• April 3- George Bechtel, Pitcher for the Louisville Grays one of the inaugural franchises in the National League.
• April 9 – Kid Butler
• April 21 – Tom O'Brien, 60, utility who played in each position except shortstop, while batting a .231 average for five different teams between 1882 and 1890.
• April 27 – Hal Mauck

• May 10 – Pete Harrison, 36, National League umpire from 1916 to 1920
• May 14 – John Farrell
• May 26 – Gil Hatfield
• June 5 – George Rettger
• June 10 – Julie Freeman
• June 15 – Robert Foster
• June 24 – Charlie Hall
• June 27 – Hugh Nicol, 63, Scottish right fielder who set 19th-century record for steals with 138 for 1887 Cincinnati team.

• July 1 – Amos Booth
• July 16 – Arthur Irwin, 63, Canadian shortstop for six teams who managed Boston to 1891 American Association pennant; later a scout and minor league manager.
• July 21 – Tom McLaughlin
• July 22 – Jack Robinson
• July 24 – Bill Dugan
• August 24 – Emil Gross, 63, catcher for five seasons from 1879 to 1884.
• August 26 – Henry Oberbeck

• September 3 – Jim Clinton, 71, outfielder for 10 seasons; 1872–1876, 1882–1886.
• October 2 – Ed Carfrey
• October 20 – Jack Hardy
• October 24 – Jimmy Barrett
• October 27 – Bill Kuehne, 63, German third baseman for the Columbus Buckeyes, Pittsburgh Alleghenys & Burghers, Columbus Solons, Louisville Colonels, St. Louis Browns, and Cincinnati Reds during the 19th century.

• November 4 – Levi Meyerle, 76, infielder who won National Association batting titles in 1871 and 1874, later playing in the first major league game.
• December 9 – Charlie Morton, 67, player, manager, and later a minor league president.
• December 15 – Joe Weber
• December 22 – Socks Seybold