USC's good turnover margin a product of good coaching

1. USC hasn't merely been good in the turnover margin category since Pete Carroll became head coach. The Trojans have been more dominant than the rest of the country. Although some believe that turnover margin is partly a product of luck from the way the ball bounces, there is strong evidence that it also can be a product of coaching. Four of the top five teams in this category since 2001 had a new head coach that season. (Rich Rodriguez was +64 at West Virginia from 2001 to 2007 before leaving for Michigan.)