U.S. Cellular Field (formerly Comiskey Park) is a baseball park in Chicago, Illinois. It is the home of the Chicago White Sox of Major League Baseball’s American League. The park is owned by the Illinois Sports Facilities Authority, but operated by the White Sox. The park opened for the 1991 season, after the White Sox had spent 81 years at the original Comiskey Park. The new park, completed at a cost of US$167 million, also opened with the Comiskey Park name, but became U.S. Cellular Field in 2003 after U.S. Cellular bought the naming rights at $68 million over 20 years.