| 1890 Louisville Colonels | |
|---|---|
| 1890 American Association Champions | |
| League | American Association |
| Ballpark | Eclipse Park |
| City | Louisville, Kentucky |
| Owner | Barney Dreyfuss |
| Manager | Jack Chapman |
The 1890 Louisville Colonels baseball team finished with an 88–44 record and won the American Association championship. The previous season, the Colonels had lost 111 games, the most any team in the Major Leagues had lost up to that point (the record was broken during the 1890 season by the Pittsburgh Alleghenys, who lost 113 games). This "worst to first" transformation was accomplished partly because of new ownership led by Barney Dreyfuss. Competition was also diminished due to the advent of the Players' League and a couple of the best AA teams jumping to the National League.
After the season, Louisville played the NL champions, the Brooklyn Bridegrooms, in the 1890 World Series. The Bridegrooms were one of the teams that had jumped to the NL, and had been the champions of the AA in 1889. The World Series wound up in a 3–3–1 tie.