Frank Cruz and USC have lost seven straight games and now sit below .500.
USC rallies in the bottom of the ninth but cannot overcome a deficit in the 12th inning.
The Trojans rallied back from a three run deficit against Pepperdine to win their second straight home contest.
After losing 11-1 Friday night, USC stepped up for a 5-2 victory over No. 6 North Carolina.
After consecutive Pac-10 series wins against Stanford, Oregon, USC faces Loyola Marymount.
USC will look to its pitching staff for consistency going into its showdown with Stanford.
Since opening the season with three wins in four games, USC has struggled.
After winning first two games of its tournament, USC falls short in the championship game.