Seventh-seeded Notre Dame faces the task of replacing another key defensive player as it prepares for second-seeded Georgia and a Bulldogs' quarterback the Fighting Irish know little about.

Here are the key matchups to watch in the trenches.

The first round of the College Football Playoff was a dud. It doesn't matter if you think they put the wrong teams in or if you blame the format of the tournament and the way it's seeded, there's no arguing the first four games all stunk.