Debating the greatest quarterback in the storied history of the University of Southern California involves choosing between historic Heisman Trophy winners and national champions. Carson Palmer captured the prestigious Heisman in 2002 and revolutionized the modern passing game, while Matt Leinart led the Trojans to consecutive national championships with an astonishing career win-loss record. Additionally, modern superstar Caleb Williams captured a Heisman Trophy with breathtaking playmaking brilliance, leaving a legacy of greatness.