Brian and Marcia Sheriff, of Des Moines, Iowa, take a picture of themselves in the "Sky Mirror" sculpture outside AT&T Stadium before an NCAA college football game between Iowa State and Oklahoma for the Big 12 Conference championship, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma fans walk towards AT&T Stadium before an NCAA college football game against Iowa State for the Big 12 Conference championship, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Fans enter AT&T Stadium before an NCAA college football game between Iowa State and Oklahoma for the Big 12 Conference championship, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma quarterback Spencer Rattler (7) throws against Iowa State during the first half of the the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma quarterback Spencer Rattler (7) throws against Iowa State during the first half of the the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma running back Rhamondre Stevenson (29) turns the corner past Iowa State defensive back Lawrence White IV (11) during the first half of the the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Iowa State tight end Charlie Kolar (88) makes the catch in front of Oklahoma defensive back Tre Norwood (13) during the first half of the the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma quarterback Chandler Morris (4) runs in for a touchdown in front of Iowa State defensive back Greg Eisworth II during the first half of the the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma defensive back Tre Norwood (13) is congratulated by cornerback Tre Brown (6) and safety Delarrin Turner-Yell (32) after making an interception in the end zone against Iowa State during the first half of the the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Iowa State tight end Charlie Kolar (88) is congratulated by offensive linemen Joey Ramos (76), Derek Schweiger (64), and Sean Foster (75) after his touchdown reception against Oklahoma during the first half of the the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma defensive lineman Perrion Winfrey grabs the face mask of Iowa State quarterback Brock Purdy (15) during the first half of the the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma kick returner Tre Brown (6) turns the corner past Iowa State's Landen Akers (82) on a kickoff return during the first half of the the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Iowa State head coach Matt Campbell yells at the referees after he thought an offsides call should have been made during the first half of the the Big 12 Conference championship NCAA college football game against Oklahoma, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Iowa State tight end Charlie Kolar (88) runs in for a touchdown in front of Oklahoma safety Pat Fields (10) defensive back Tre Norwood (13) and linebacker David Ugwoegbu (2) during the first half of the the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma head coach Lincoln Riley hoists the Big 12 Conference championship trophy after defeating Iowa State 27-21 in an NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma head coach Lincoln Riley hosts the Big 12 Conference championship trophy after defeating Iowa State 27-21 in an NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma's Ronnie Perkins (7) hoists the Big 12 Conference championship trophy as he and his teammates celebrate their 27-21 win over Iowa State in an NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma quarterback Spencer Rattler (7) is congratulated by running back Rhamondre Stevenson (29) as he holds the Most Outstanding Player trophy after their 27-21 win over Iowa State in the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

Oklahoma cornerback Tre Brown (6) comes down with a game-sealing interception on a pass intended for Iowa State wide receiver Xavier Hutchinson (8) as safety Delarrin Turner-Yell (32), defensive back Tre Norwood (13) and Iowa State wide receiver Darren Wilson Jr. (17) look on late in the second half of the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas.. Oklahoma won 27-21. (AP Photo/Jeffrey McWhorter)

Iowa State quarterback Brock Purdy (15) is sacked by Oklahoma linebacker Nik Bonitto (11) during the second half of the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. Oklahoma won 27-21. (AP Photo/Jeffrey McWhorter)

Oklahoma defensive end Marcus Stripling (33) tries to bring down Iowa State running back Breece Hall (28) by the shirt during the second half of the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. Oklahoma won 27-21. (AP Photo/Jeffrey McWhorter)

Iowa State quarterback Brock Purdy (15) looks to pass as he escapes the tackle of Oklahoma defensive lineman Perrion Winfrey (8) during the second half of the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. Oklahoma won 27-21. (AP Photo/Jeffrey McWhorter)

Oklahoma defensive end Ronnie Perkins (7) celebrates his team's 27-21 win over Iowa State in the Big 12 Conference championship NCAA college football game, Saturday, Dec. 19, 2020, in Arlington, Texas. . (AP Photo/Jeffrey McWhorter)

Oklahoma head coach Lincoln Riley talks with quarterback Spencer Rattler (7) before the Big 12 Conference championship NCAA college football game against Iowa State, Saturday, Dec. 19, 2020, in Arlington, Texas. (AP Photo/Jeffrey McWhorter)

FILE - Iowa State quarterback Brock Purdy (15) is sacked by Oklahoma linebacker Nik Bonitto (11) during the second half of the Big 12 Conference championship NCAA college football game in Arlington, Texas, in this Saturday, Dec. 19, 2020, file photo. Bonitto is well aware that the Sooners defense, for all the drastic improvements made over two seasons with its “Speed D” scheme, needs to prove itself outside the Big 12. After winning a sixth conference title in a row, the No. 8 Sooners (8-2) will again end the season in a New Year's Six bowl game against a high-powered SEC offense. This time they face national passing leader No. 10 Florida. (AP Photo/Jeffrey McWhorter, File)

FILE - Oklahoma quarterback Spencer Rattler (7) laughs with teammates on the sidelines during an NCAA college football game against Iowa State for the Big 12 Conference championship, in Arlington, Texas, in this Saturday, Dec. 19, 2020, file photo. Rattler was selected to The Associated Press Preseason All-America first team offense, announced Monday, Aug. 23, 2021. (AP Photo/Jeffrey McWhorter, File)

FILE - Oklahoma quarterback Spencer Rattler (7) throws a pass during an NCAA college football game against Iowa State for the Big 12 Conference championship, in Arlington, Texas, in this Saturday, Dec. 19, 2020, file photo. Rattler was selected to The Associated Press Preseason All-America first team offense, Monday Aug. 23, 2021. (AP Photo/Jeffrey McWhorter, File)