There was some significant movement in the new rankings released after the Week 13 games. While the top four teams in last week's rankings —Oregon, Ohio State, Texas, and Penn State—all took care of business, other teams projected to be in the 12-team College Football Playoff bracket suffered losses.

What happened in Week 13? We are now down to one undefeated FBS team following No. 5 Indiana's loss to No. 2 Ohio State and No. 19 Army's loss to No. 6 Notre Dame. On top of that, four ranked teams fell to their unranked opponents on Saturday.