The Leland Giants were a Negro league baseball team that competed independently during the first decade of the 20th century. The team was formed via a merge of the Chicago Unions and the Chicago Columbia Giants in 1901, and then split in 1910 to form the Chicago Giants and what would become known as the Chicago American Giants. The team was named after its owner and manager, Frank Leland.
In a 1910 article, former shortstop Jimmy Smith described the 1905 season by saying the team "made a great record of 43 straight wins" between May 19 and July 16, 1905 when they were finally beat by the Spalding team on their home grounds in Chicago.
Bruce Petway took over catching duties in 1906 and the talent improved dramatically in 1907 as Rube Foster (HOF), Pete Hill (HOF), "Big Bill" Gatewood, "Mike" Moore and four other players came from East Coast teams. The 1907 team compiled a 110–10 record, including 48 straight wins.
The Giants went 64–21 against semipro teams in 1908 and tied a cross-region match-up with the Philadelphia Giants at three games apiece. The team was managed by Foster in 1909 and was just 8–10 against other top black teams.
The team faced off against the Chicago Cubs in a mid-October series. Johnny Evers and Frank Chance sat out. In game one the Cubs' Three-Finger Brown beat Walter Ball 4–1. The Leland Giants were leading 5–2 in the bottom of the ninth the next day as Foster faced Ed Reulbach, but Rube allowed four runs in that frame to fall on a controversial final play at the plate. In game three, Brown beat Pat Dougherty 1–0. The Leland Giants had lost two one-run decisions and another fairly close game against a team that had won 104 games in the National League, showing they could compete with the top white teams in the country.