Southern California tailback Stafon Johnson had emergency throat surgery Monday after a weightlifting accident.
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The senior who scored the No. 7 Trojans' go-ahead touchdown against Ohio State two weeks ago was bench-pressing when the bar slipped from his right hand and fell onto his throat.
Johnson's family and friends gathered at the hospital on Monday to await word on his surgery.
The Trojans didn't immediately know how long Johnson would require to return from surgery.
Johnson scored two touchdowns apiece against San Jose State and Ohio State, including that 2-yard run with 1:05 left to beat the Buckeyes. He added another touchdown last weekend against Washington State.
Oddsmakers from online sports book Sports Interaction have made USC a 6-point road favorite over No. 24 California this Saturday.
Posted: 9/29/09 12:08PM ET