The first College Football Playoff semifinal matches Notre Dame and Penn State - two teams featuring elite defenses. Who wins? Our experts weigh in.

Notre Dame trailed Penn State by seven at halftime and the two teams combined to score 31 points in the fourth quarter after scoring just 20 points in the first three quarters. Here are the five plays that defined Notre Dame's win over the Nittany Lions to put them in position for the school's first national title since 1988.