Answer
Pete Carroll won back to back National Championships at USC in 2003 and 2004. Carroll was the head coach of the USC Trojans football team from 2001 to 2009. During his tenure at USC, Carroll led the Trojans to a 97-19 record, including four Pac-10 Conference championships and two national championships. Carroll's 2003 and 2004 USC teams were both undefeated and ranked No. 1 in the nation.