The International League (IL) is a Minor League Baseball league that operates in the United States at the Triple-A level, which is one grade below Major League Baseball. A champion has been determined at the end of each season since the league was formed in 1884.
Through 1932, champions were usually the regular-season pennant winners—the team with the best win–loss record at the conclusion of the season. From 1933 to 2020, postseason playoffs were held to determine champions. Participants from 1933 to 1987 were usually the four teams with the highest winning percentages. From 1988 to 2020, the four qualifiers were the division winners and one or two wild card teams. The winner of each season's playoffs was awarded the Governors' Cup. These playoffs and the issuing of trophy were discontinued in 2021, when the winner was the team with the best regular-season record. In 2022, the league championship was determined by a single playoff game between the East and West division winners. Beginning with the 2023 season, the league adopted a split season format, in which the league championship is determined by a best-of-three playoff series between the winners of each half of the season, with the winner meeting the champion of the Pacific Coast League in the Triple-A National Championship Game.[1]
The Rochester Red Wings have won 19 International League championships, more than any other team, followed by the Columbus Clippers (11) and the Baltimore Orioles, original Buffalo Bisons, and Toronto Maple Leafs (10). Among active IL franchises, Rochester has won 19 championships, the most of all teams, followed by Columbus (11) and the Durham Bulls and Syracuse Mets (8). During the era of the Governors' Cup playoffs from 1933 to 2020, the most cup titles were won by Columbus (11), followed by Rochester (10) and Syracuse (8).