Dark horse emerges in USC RB race

Between veterans Silas Redd, D.J. Morgan, Javorious Allen and incoming freshmen Justin Davis and Ty Isaac, the USC Trojans looked stacked at running back for 2013. You wouldn't expect another runner to compete there, especially not one who just missed an entire season with a torn ACL, and who came to USC to play linebacker. But Johnny Curren of WeAreSC on ESPN.com says that's just what Tre Madden will try to do.