The Beloit Sky Carp are a Minor League Baseball team of the Midwest League and the High-A affiliate of the Miami Marlins. They are located in Beloit, Wisconsin, and play their home games at ABC Supply Stadium. They previously played at Harry C. Pohlman Field from its opening in 1982 until moving into their current ballpark in August 2021.

The Peoria Chiefs are a Minor League Baseball team of the Midwest League and the High-A affiliate of the St. Louis Cardinals. The team was established in 1983 as the Peoria Suns. They are located in Peoria, Illinois, and are named for the Peoria Indian tribe for which the city was named. In 2005, the team replaced the indigenous imagery associated with the Chiefs name and moved to a logo of a dalmatian depicted as a fire chief. The Chiefs play their home games at Dozer Park, which opened in 2002. They previously played at Vonachen Stadium near Bradley University from 1983 through 2001. The Chiefs have made the playoffs a total of 13 times, through eight wild-card berths, three first-half titles, and two second-half titles.