Complex sentence: Football's single-season attendance record was set in 1991 with a total of 180,457 fans over nine home games, including playoffs; and the regular-season attendance record was set in 1993 at 151,081 fans.
Split into simpler sentences: Football's single-season attendance record was set in 1991 with a total of 180,457 fans over nine home games, including playoffs. The regular-season attendance record was set in 1993 at 151,081 fans.