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.

The latter half of the projected College Football Playoff bracket experienced a major shakeup after the chaos of Week 13. Three teams featured in the previous bracket cycled out of the field after getting upset to bring in a new round of contenders.

W ith just one week left in the college football regular season, the only thing we really know about the playoff field is that we don't know anything for sure about anything yet.