It's Week 12 of the college football season, and nothing is certain in the sport, which is a far cry from previous years when we all stressed over the same handful of blue bloods vying for the top four spots in the College Football Playoff -- or the top two spots in the terrible BCS era.

Coming off an eventful weekend of upsets and prove-it moments for national title hopefuls, the College Football Playoff selection committee has revealed its second top 25 rankings. As expected, there was some movement around the top four of the rankings after two of those teams lost their games,