Both the college football rankings and the College Football Playoff picture took a sharp turn on Saturday. More than a half-dozen ranked teams took losses, leaving voters — and the selection committee — with some tough decisions when it comes to sorting out the new top 25.

Week 13 of the college football season continued to show that the Big 12 remains as compelling as any other conference in college football. And as a result, the Big 12's chances of having multiple bids to the 12-team College Football Playoff are in serious jeopardy after both of the conference's two top-ranked teams were upset on Saturday.

College football rankings The college football world took another expected turn over the weekend, with seven more ranked teams losing, which brings the two-week total to 14. At the forefront, the Alabama Crimson Tide's shocking upset to an unranked Oklahoma Sooners team created some of the biggest headlines.