The Austin American-Statesman (or, as some like to call it, the Austin-American Statesman) has attempted to identify the most exploitable vulnerabilities for some of this year’s title contenders. They point out line play as USC’s weakness

2. Southern California’s offensive line: The Trojans’ line is one of the least experienced in the country. This could be an issue for a team that hasn’t settled on a featured back yet and has only four starters returning on offense.

and it’s hard to disagree, since that was our problem last year (albeit largely due to injuries) and it’s not obvious that we’ve improved significantly in that area.