The National League played a split season schedule, with the teams that had the best record in each half of the season meeting in a postseason best-of-nine series, known at the time as the "World's Championship Series".
March 4 – Following the collapse of the American Association, the National League holds its first meeting. They decide on a split season for 1892, with the winners from each half to meet in a championship series following the regular season.
July/August – After the Boston Beaneaters cut some players, they begin the second half slowly and the Cleveland Spiders take the lead. Some fans accuse the Boston club of purposely playing poorly "in order to force a playoff at the end of the season"—that is, to generate extra revenue.[6]
September 21 – Pitcher John Clarkson of the Cleveland Spiders records his 300th career win.
October 15 – On the last day of the season, Bumpus Jones of the Cincinnati Reds makes his major league debut with a 7–1 no-hitter against Pittsburgh, becoming the second pitcher to hurl a no-hitter in his first start.
October 17 – The first-half champion Boston Beaneaters and second-half champion Cleveland Spiders begin a best-of-nine "World's Championship Series" to determine an overall champion. The first game, pitched by Jack Stivetts for the Beaneaters and Cy Young for the Spiders, ends in a 0–0 tie after 11 innings.
October 24 – The Beaneaters win their fifth consecutive game over the Spiders to capture the championship.
November 1 – Statistics for the first 154-game season show that Dan Brouthers of the Brooklyn Grooms was the top hitter with a .335 batting average, and Cy Young of the Cleveland Spiders the best pitcher with a 36–11 record and a .766 winning percentage.
November 17 – National League magnates conclude a four-day meeting in Chicago where they agree to shorten the 1893 schedule to 132 games and drop the split season schedule (the league's next split season would be 1981). They also pledge to continue to reduce player salaries and other team expenses.
May 21 – Hub Collins, 28, second baseman for the 1889–90 champion Brooklyn teams who led league in doubles and runs once each
July 12 – Alexander Cartwright, 72, pioneer of the sport who formulated the first rules in 1845, developing a new sport for adults out of various existing playground games; established distance between bases at 90 feet, introduced concept of foul territory, set the number of players at nine per team, and fixed the number of outs at three per side and innings at nine; founded Knickerbocker Base Ball Club, the sport's first organized club, in New York City, and spread the sport across the nation into the 1850s.
October 5 – Dickie Flowers, 42?, shortstop for two seasons in the National Association, 1871–72.
November 3 – Edgar Smith, 30, played in four seasons with four teams from 1883 to 1885, and 1890.
