"Can't believe it's over. It's been a wild ride," Mayfield said when asked about his emotions following the loss.
Mayfield, the Heisman Trophy winner, finished with 287 yards passing and two touchdowns.
He also thanked Sooner fans in a tweet:
Thank you Sooner Nation. Thank you for giving me never ending support. I hope you know I gave it everything I had. It has been and unbelievable ride and I'm so glad we enjoyed it together. I love y'all. God Bless and Boomer. -Bake