The
1891 Boston Reds baseball team finished the season with a 93–42 record and won the
American Association championship in their first season in the new league after the demise of the
Players' League. Thus they became only the second team (after the 1889–1890
Brooklyn Bridegrooms) to win championships in two different leagues in successive seasons. After the season, the AA also disbanded, and the Reds team folded with the league.