The Midwest League came to Kane County in 1991 when the Wausau Timbers relocated to Geneva, IL.

Miguel Cabrera has had a notable career and 2003 Series MVP Josh Beckett played for the Cougars in 2000, while Dontrelle Willis had the league's best winning percentage and earned run average in 2002.

[5] Nancy Faust, after 40 years with the Chicago White Sox, was the stadium organist for selected Cougar home games until her retirement after the 2015 season.

[14] Following their 2024 American Association championship, the team was invited to participate in the 2025 Baseball Champions League Americas tournament.

Roster updated August 27, 2024 Transactions Notable franchise alumni include:[19] Also see Category: Kane County Cougars players.