|No. of teams||8|
|Crystal Lake Cardinals|
The Metropolitan Collegiate Summer Baseball League of Illinois is a collegiate summer baseball league consisting of eight teams based in Illinois. Formed in 1978, the league is affiliated within the National Amateur Baseball Federation. The majority of the teams are located in the Chicago, Illinois metropolitan area.
The league included the following eight teams for 2019: Crystal Lake Cardinals, Force Elite Baseball, Kane County Phantoms, Wheaton White Sox, Chicago Mudcats, Illinois Indians, Illinois Cardinals, Windy City Prospects.
The Metropolitan Collegiate Summer Baseball League of Illinois (MCBSI) is nicknamed the "Metro League." The League was originally named the Metro Thoroughbred League of Illinois, before the league name was changed in 1987.
The Metropolitan Collegiate Summer Baseball League of Illinois plays an annual All-Star game against the Chicago Suburban League All-Stars. The 2018 All-Star Game was played at Hoffer Field on Judson University's campus in Elgin, Illinois.
The league notes that: "College players, home for the summer, can enjoy their families and friends, together with participating in a good competitive league. Official Major League (American League) rules are used with the exception of mandatory use of double ear flap helmets and college safety slide rule. The league has used wood bats since 1992.
|2019 Teams||Team Metro League|
|Crystal Lake Cardinals||Metro League|
|Force Elite Baseball||Metro League|
|Kane County Phantoms||Metro League|
|Wheaton White Sox||Metro League|
|Aurora Thunder||Metro League|
|Illinois Cardinals||Metro League|
|Illinois Indians||Metro League|
|Windy City Prospects||Metro League|