As of 10/10/10, California last beat USC on September 27, 2003. The final score was 34-31 in triple overtime; this was USC's only loss in the season where they won the AP National Championship, but did not play in the BCS National Championship game.
0-0 they southern cal and uf havent ever played Yes they have. In 82-83 . The Gators beat USC in " 82 and they tied in 83 "
Michigan defeated USC by a score of 22-14 on January 2, 1989 during the 1989 Rose Bowl Game.
As of the 2008 season, USC leads the all time series against California, 60-30-5.
Penn State in 1996
To me its USC or CAL
Alabama Beat USC Alabama Beat USC 24 / 3 Alabama 24 USC 3
USC never beat a team 42-38 in 1990 http://www.fanbase.com/USC-Trojans-Football-1990 The closest score to this question was USC beat UCLA 45-42 if that helps
Florida
Southern cal
Penn State August 25, 1996 http://www.mcubed.net/ncaaf/1996/usc.shtml
The Huskies not the Cougars beat USC
USC beat Michigan