Now that spring ball has arrived and the happy sounds of football fill the air, the time is now for identifying holes in the Trojans and who they need to fill them.

Some of the players featured in this slide show will surprise you with their inclusion, and some may not be who the Trojans settle on when all is said and done.

But all of them are crucial to USC’s success for 2011.

In compiling this list, an urge to rank them by importance was resisted because even though some of the needs for certain positions are more magnified than others, the answers to questions needed to fill these positions are still a long way off.

However, make no mistake about it, if these players come through for the Trojans, it will go a long way toward achieving the success that head coach Lane Kiffin has promised for the upcoming year.

Lets get started then on this list of players who USC needs to step up for 2011…

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