The question concerning Bret Bielema is whether he will be the next Barry Switzer or the next Bill Battle.
Switzer, an Oklahoma assistant, took over the Sooners in 1973 at age 35 and went 10-0-1. He won at least a share of the national championship in the next two years and won a third in 1985. Battle, a Tennessee assistant, took over the Volunteers in 1970 at age 28 and went 11-1. Over seven seasons, his victory total slowly dwindled until he went 6-5 in 1976 and was fired.
Whether it is a team trying to remain or return to the top or a player stepping into a starting role or coming back from an injury, each new season brings a new set of challenges. With spring practice right around the corner, ESPN.com takes a look at what's next for 10 programs, players or conferences that have something to prove in 2007.