Rohnert Park Stadium was a stadium in Rohnert Park, California. It was primarily used for baseball, and was the home field of the Redwood Pioneers and the Sonoma County Crushers minor league baseball teams. It was built in 1981 and held 4,150 people. The stadium was torn down in 2005, and the land was redeveloped as a Costco. Outlines of the baseball diamond are still visible in satellite photos, with home plate at 38°21′10″N 122°43′13″W / 38.35272°N 122.72024°W.