The following are the baseball events of the year 1881 throughout the world.
Inter-league playoff: New York Mets (ECA) def. Chicago (NL), 2 games to 1.
National League final standingsEdit
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- January 11 – The first of a series of baseball games played on ice is played in Chicago. This will become a regular event in the Chicago area.
- March 8 – The National League agrees on an 84-game schedule for the upcoming season. The owners are polled and pick the Chicago White Stockings as the pre-season favorite to win the pennant.
- March 9 – The National League releases a list of 23 umpires approved to call league games.
- April 11 – The Eastern Association is formed and includes the New York Metropolitans, The Washington Nationals and Brooklyn Atlantics, all teams that have regularly played competitively against National League teams.
- April 27 – With pitcher George Bradley already out with pneumonia, the Detroit Wolverines lose their other hurler Bill Sweeney to a pulmonary hemorrhage. Neither pitcher will ever play a single game for the Wolverines.
- May 14 – Charley Jones wins a judgement against the Boston Red Caps for his unpaid salary due from 1880 in an Ohio court. Cleveland law enforcement will take the money from the Red Caps share of gate receipts when Boston plays in Cleveland.
- May 20 – Mike "King" Kelly scores the go-ahead run by cutting short the distance rounding the bases. Kelly doesn't come close to touching third while the umpire is looking a different direction. Kelly then pulls off the hidden ball trick in the 9th inning to preserve the win for the Chicago White Stockings.
- May 28 – A man is arrested for trying to bribe John Clapp of the Cleveland Blues to throw a game. Clapp will acquire the nickname "Honest John" because he went to the police after the bribe offer was made.
- June 1 – Tommy Bond is released by the Boston Red Caps after starting the season 0–3. After averaging nearly 500 innings pitched per season over the last 7 years, Bond's arm is no longer what it once was. Bond will never regain his once-dominating form.
- June 18 – The Washington Nationals of the Eastern League disband, citing lack of interest after being rejected to join the National League.
- June 20 – A new team is formed in Cincinnati after the demise of the previous Cincinnati Reds team. This new club will succeed and become the modern-day Cincinnati Reds.
- June 25 – George Gore of the Chicago White Stockings sets a major league record by stealing 7 bases in one game. Billy Hamilton will tie this record in 1894.
- September 3 – Lip Pike of the Worcester Ruby Legs makes 3 errors in the 9th inning which gives the Boston Red Caps 2 runs and a 3–2 victory. Worcester accuses Pike of throwing the game and immediately suspends him. Pike will only play in 1 more game in his career, in 1887.
- September 10 – With the Troy Trojans trailing 7–4, the bases loaded and two out in the bottom of the 9th, Roger Connor hits the first grand slam in National League history for an 8–7 victory.
- September 12 – Chub Sullivan, who was captain of the Worcester Ruby Legs before falling ill in the spring, dies in Boston at the age of 25.
- September 15 – Davy Force of the Buffalo Bisons turns 2 unassisted double plays, participates in 2 other double plays and starts a triple play for the Bisons. Despite his feat, Buffalo loses in 12 innings, 7–6 to the Worcester Ruby Legs.
- September 16 – The Chicago White Stockings win their 2nd straight pennant with a 4–0 win over the Boston Red Caps.
- September 25 – The National League announces that all 8 teams will return for the 1882 season. This is the first time that the major leagues have had the same teams in 2 consecutive seasons.
- September 27 – The Troy Trojans lose to the champion Chicago White Stockings 10–8 in a heavy rain storm in front of 12 spectators, setting a record for the least attended game.
- September 29 – The National League issues a list of 10 blacklisted players who will require unanimous league approval for reinstatement. The reason given for the blacklisting is "confirmed dissipation and general insubordination."
- February 6 – Ham Allen, 34, batted .273 for the 1872 Middletown Mansfields.
- March 1 – Hugh Campbell, 34?, pitcher for the 1873 Elizabeth Resolutes.
- April 11 – John McMullin, 32?, outfielder in the National Association from 1871–1875 who batted .346 for the 1874 Philadelphia Athletics.
- April 21 – Josh Snyder, 37, left fielder for the 1872 Brooklyn Eckfords.
- April 21 – James Sumner, 29, umpire in National league from 1876 to 1878.
- May 10 – Fraley Rogers, 30?, outfielder for the Boston Red Stockings from 1872–1873.
- May 13 – Mort Rogers, ?, umpire in the National Association from 1871 to 1872.
- July 11 – Steve Dignan, 22, played in 11 games for two teams in 1880.
- September 7 – Red Woodhead, 30, third baseman for the 1879 Syracuse Stars.
- September 12 – Chub Sullivan, 25, first baseman who played from 1877–1880.
- October 7 – Mike Brannock, 29, played parts of two seasons with Chicago White Stockings in the 1870s.
- November 11 – Clipper Flynn, 32, hit .338 in his only full season in 1871.