From Ohio History Central
The Cleveland Red Sox was a professional African-American baseball team.
During the late 1800s and the early 1900s, professional baseball teams and leagues were segregated. African Americans did not play on teams with white players. White teams and black teams did not play in the same professional leagues. As a result of this segregation, there were separate leagues and teams for whites and blacks in professional baseball's early decades.
The Cleveland Red Sox played its home games in Cleveland, Ohio. The team played in the Negro National League. In 1933, the Columbus Bluebirds moved from Columbus, Ohio, to Cleveland and became the Cleveland Giants. The Cleveland Giants played in the 1933 season and then became known as the Cleveland Red Sox. The Red Sox disbanded following the 1934 season.