Getty Lincoln Riley and USC's next set of games against Michigan, Notre Dame and Nebraska could define future of program. The USC football program was once considered one of the elites in college football. But years of unmet expectations have brought little more than disappointment and lingering questions, with head coach Lincoln Riley now at the center of it all. After a 4-0 start to the season, the then-No. 21 Trojans were viewed as one of the country’s most underrated teams and a dark horse