The 1890 major league baseball season began on April 17, 1890. The National League and newly founded Players' League regular seasons ended on October 4, with the Boston Beaneaters and Boston Reds as the NL and PL pennant winners, respectively. The American Association regular season ended on October 15 and saw the Louisville Colonels the winners of the AA pennant. The postseason between the AA and NL began with Game 1 of the seventh World's Championship Series on October 17 and ended with Game 7 on October 28. The series ended in a tie, with the Bridegrooms and Colonels each with three wins, and a tie game. The series was unique in that the Bridegrooms reached the series back-to-back, but with each season in a different league, a feat that has not been matched since. The Reds had floated a three-way Championship series with them and the AA & NL pennant winners, though the idea fell on deaf ears.
This was the final season of a dual-league championship until the founding of the modern World Series in between the National League and American League.
The major league world was in turmoil in 1890, as many of the best players had jumped to the "outlaw" Players' League. Although the Brotherhood only lasted the one season, it had a detrimental financial effect on the other two leagues, especially the Association, who would not survive the following season, merging into the National League in December 1891.
Over the prior offseason, the Indianapolis Hoosiers and Washington Nationals of the National League, and Kansas City Cowboys of the American Association folded. The Brooklyn Bridegrooms and Cincinnati Red Stockings (now Reds) transfer from the American Association to the National League, while the Baltimore Orioles departed the AA for the minor league Atlantic Association, leaving four vacancies in the American Association that would be filled by the Brooklyn Gladiators (who would fold in August, being replace by a returning Orioles team), Rochester Broncos, Syracuse Stars, and Toledo Maumees.
Following the 1890 season, the single season Players' League disbanded during the offseason, with most teams either folding or merging with existing American Association and National League teams; the Boston Reds and Philadelphia Athletics would join the AA for the 1891 season, with the latter replacing the financially struggling original AA Philadelphia Athletics.
The major-league status of the Federal League was confirmed by the Special Baseball Records Committee (as convened by then-Commissioner of Baseball William Eckert) in 1969.
The 1890 schedule consisted of 140 games for all teams in the American Association, National League, and Players' League, each of which had eight active teams (the Baltimore Orioles would finish the Brooklyn Gladiators' schedule once they folded following their last game on August 25). Each team was scheduled to play 20 games against the other seven teams of their respective league. This continued the format put in place by the American Association since the season and by the National League since the season. This format would last until .
American Association Opening Day took place on April 17 featuring six teams, while National League and Players' League Opening Days took place on April 19, each featuring their eight teams. The American Association would see its final day of the regular season on October 15 with a doubleheader between the Baltimore Orioles and Rochester Broncos. The National League would see its final day of the season on October 4, with a doubleheader between the Philadelphia Phillies and Cleveland Spiders. The Players' League would see its season end on the same day, with all eight teams playing. The 1890 World's Championship Series took place between October 17 and October 28.
The 1890 season featured an extremely rare tripleheaderâÂÂthe first of three in National League and major-league history, when the Brooklyn Bridegrooms hosted the Pittsburgh Alleghenys on September 1 for three games. The Bridegrooms sweep the Alleghenys.
The 1890 season saw the following rule change:
A dagger (â ) denotes a team that folded mid-season<br> A double dagger (â¡) denotes a team joined mid-season
The Brooklyn Gladiators, Cleveland Spiders, and Pittsburgh Alleghenys played in 17 neutral site games in which they were treated as the home team. Meanwhile, blue laws restricted Sunday activities in several localities, causing several teams of the American Association (which was informally referred to as the "Beer & Whiskey League" due to its openness on alcohol, compared to the National and Players' Leagues) to play at ballparks in a different locality.
31 tie games (15 in AA, 9 in NL, 7 in PL), which are not factored into winning percentage or games behind (and were often replayed again), occurred throughout the season.
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Any team shown in indicates a previous team a player was on during the season.
Only records for National League teams are available.
The 1890 season saw the formation of the single-season Players' League, and with it, saw eight new major league teams in eight ballparks:
With the Brooklyn Bridegrooms transferring to the National League, which bans Sunday games, their three-season tenure playing Sunday games at Ridgewood Park in Ridgewood, New York ends.
The 1890 season saw six teams playing at their respective ballparks for the last time, five of which moved into new ballparks for the start of the season while one team, the Brooklyn Gladiators, folded mid-season.
For various reasons, three teams would play home games at neutral sites:
Four teams of the American Association hosted Sunday games: