Undefeated college football teams: 2015
Only two FBS teams remain undefeated going into championship week:
No. 1 Clemson (12-0)
Clemson had to hold on to dispose of arch-rival South Carolina, but a win is a win. And, the Tigers have 12.
Outlook: North Carolina looked tough against NC State in the last week of the regular season; so, perhaps the Tigers' path to the playoff isn't as clear as we thought. All questions will be answered in Charlotte.
No. 5 Iowa (12-0)
Nebraska gave Iowa its best shot, but that wasn't enough to knock the Hawkeyes from the ranks of the unbeaten.
Outlook: With Michigan State awaiting them in the Big Ten Championship game, this is Iowa's time to prove that 12-0 isn't a fluke. But, Sparty is definitely the toughest challenge they've faced so far.