The final weekend of the 2021 college football regular season turned out to be one of the most dramatic in recent memory. No. 5 Michigan toppled No. 2 Ohio State to earn its first appearance in the Big Ten Championship Game and first win over the Buckeyes since 2011. No. 3 Alabama came back with 10 fourth-quarter points to force overtime against rival Auburn, and then won the Iron Bowl in the fourth overtime on a pass from Bryce Young to John Metchie III

If those two weren't enough, the nightcap was a Bedlam for the ages that resulted in a 37-33 win for seventh-ranked Oklahoma State Cowboys over No. 10 Oklahoma

The national title picture cleared up a little bit on Saturday after a wild, wild ride. Let's grade the performances of the national title contenders that entered rivalry weekend with 100-1 or better odds to win it all according to Caesars Sportsbook.

College football grades: Week 13 report card