Rent One Park is a stadium in Marion, Illinois that was completed in 2007. It is primarily used for baseball and is the home of the Southern Illinois Miners of the Frontier League. The stadium has a contemporary, non-traditional look, void of the common red brick and green steel common among ballparks around the United States. One of the most unusual features of the new stadium is the roof, which slopes down toward the field. As a result, foul balls hit by players can sometimes roll back down for spectators to catch.