The Southern Illinois Miners were a professional baseball team based in Marion, Illinois. The Miners were members of the West Division of the independent Frontier League. From 2007 to 2021, the Miners played their home games at Rent One Park. The "Miners" name refers to the Southern Illinois region's history of coal mining. The Miners won their first and only Frontier League championship in 2012. Following the 2021 season, the team owners announced their retirement would also come with the folding of the franchise.