The four teams chosen to compete in the College Football Playoff have been revealed.
The Crimson Tide won its 12 regular-season games by an average of more than 35 points per game, with the closest being a 22-point win over Texas A&M in late September.
Oklahoma is in the College Football Playoff, moving into the fourth and final spot in the rankings after winning the Big 12 championship.
This will be the first Cotton Bowl appearance for the Tigers since 1939.
After examining the bodies of work for Oklahoma, Ohio State and Georgia, the committee decided that none of the three teams was "unequivocally better" than the other, selection committee chairman and University of OR athletic director Rob Mullens told ESPN.
Notre Dame's Fighting Irish, who went 12-0 this season, did not play on Saturday, however, they made the playoff for the first time in school history.
The debate leading up to championship Saturday was whether Oklahoma or Ohio State might take the fourth spot if Alabama beat Georgia.
- UGA's loss to Alabama in the Southeastern Conference championship has cost the Dawgs dearly. "Clemson is the best football team we have played this football season". The line had ticked down to Clemson -11 at several books as of Sunday afternoon. Alabama has appeared in the last three national title games and won two of them. The book opened the Crimson Tide as an 8.5-point favorite over the Tigers in a potential title-game meeting. "That is the ultimate compliment I can give them" said Saban.