The six–team Bi-State League was formed for the 1915 season with the
Aurora Foxes,
Elgin Watch Makers,
Freeport Pretzels,
Ottawa Indians,
Racine Belles and
Streator Boosters as charter members under the direction of president B.M. Parsons. The league evolved from the
Wisconsin-Illinois League, which had Racine as a member and folded after the 1914 season. After beginning play on May 11, 1515, the Bi-State League disbanded on July 7, 1915, after the Elgin and Aurora franchises folded. The Streator Boosters were in first place in the league standings when the Bi-State League folded. With a 30–18 record, Streator was 1.0 game ahead of the second place Racine Belles (30–20) in the final standings. They were followed by Elgin Watch Makers (27–26), Aurora Foxes (25–27), Freeport Pretzels (23–29) and Ottawa Indians (20–35) in the final standings. == List of teams ==