Oklahoma used a strong passing game in the first half and a powerful running game in the second half to beat Oklahoma State 38-20, winning Bedlam and the Big 12 championship at Owen Field in Norman on Saturday.
On a wet field, both teams started slowly on offense.
The two teams combined for just one first down on the first two possessions for each side, with both offenses seeming a little tentative in the inclement weather.
OSU moved the ball on their third possession, getting a 13-yard keeper from Mason Rudolph, then a 26-yard run by Chris Carson to the OU 7-yard line.
On 3rd and goal from the OU 1, Rudolph fumbled the snap and recovered at the 2.
Ben Grogan kicked a 19-yard field goal to give the Cowboys a 3-0 lead with 5:16 to play in the first quarter.
The Cowboys threatened to score again later in the quarter, but were called for holding on a 14-yard run by Justice Hill that would have been a first down.
Hill had 99 yards rushing on 16 carries.
Oklahoma struggled in the running game early, with just 2 rushing yards in the first quarter.
OSU outgained the Sooners in the first quarter122-40.
On the first play of the second quarter, OU went to the air, as Mayfield rolled right, and with plenty of time to throw, found Dede Westbrook open. He broke a tackle and went 69 yards for a touchdown to give the Sooners a 7-3 lead with 14:46 to play in the second quarter.
After forcing the Cowboys to punt after three downs, Oklahoma struck for another big play on the first play of the enusing possession.
Mayfield rolled left and found Dimitri Flowers wide open for a gain of 67 yards to the OSU 3-yard line.
Oklahoma couldn't punch it in, however, as the Sooners were called for offensive pass interference, negating a 2-yard touchdown pass from Mayfield to Geno Lewis.
Then after a dropped pass by Joe Mixon that would have been a touchdown, Austin Seibert kicked a 34-yard field goal to make it 10-3 Sooners with 11:36 to play in the second quarter.
After forcing OSU to punt after three downs again, Oklahoma was on the move again, when Mayfield found Westbrook over the middle.
He was leveled by a hit from OSU's Jordan Sterns and the ball came out. Westbrook stayed down for a while and appeared to be knocked out, before walking off.
Westbrook had 4 catches for 111 yards.
Oklahoma State then got their first big pass play of the game on the ensuing possession, with Rudolph throwing deep to James Washington for a gain of 44 to the Sooners' 12-yard line.
Rudolph struggled for most of the day passing, however, going 11 for 25 passing for 186 yards.
Two plays later, Chris Carson scored on a 6-yard touchdown run up the middle to tie the game at 10 with 5:05 to play in the first half.
Carson had 91 yards rushing on 12 carries.
After forcing the Sooners to punt after plays, OSU marched to the go-ahead score.
Mason Rudolph capped a 50-play drive in 8 plays with a 6-yard touchdown run to make it 17-10 Cowboys with 1:28 to play in the first half.
With still some time, Oklahoma got a big play as Mayfield passed to Jeffery Mead for a gain of 42 yards to the Cowboys' 15-yard line.
Two plays later, Mayfield zipped a pass over the middle to Geno Lewis for a 10-yard touchdown to tie the game again, 17-17 with 27 seconds left in the first half.
Total yards were nearly even at halftime, with OU holding the edge, 277-260.
On the opening play of the second half, Samaje Perine broke loose for a gain of 66 yards to the OSU 15.
Five plays later, Perine scored from a yard out to put the Sooners up 24-17 with 11:56 to play in the third quarter.
Perine finished with 239 yards rushing on 37 carries and moved into fifth place on OU's career rushing chart with 4,036 yards. He needs to just 36 yards to pass Steve Owens, Adrian Peterson, and Joe Washington to move into second place behind Billy Sims.
After forcing another OSU 3 and out, Oklahoma's offense put together its most impressive drive of the game, going 80 yards in 13 plays and taking 6:24 off the clock.
OU capped the drive with a 13-yard touchdown pass from Mayfield to Joe Mixon in the right side of the end zone, giving the Sooners a 31-17 lead with 4:21 to play in the third quarter.
Mayfield was on target all day, going 13 for 19 passing for 288 yards and 3 touchdowns.
A pair of big pass plays from Rudolph to Jhajuan Seales allowed OSU to respond.
First, a 54-yard gain, then one for 21 yards on 3rd down.
After Ogbonnia Okoronkwo sacked Rudolph on 3rd and 6 from the 9, Ben Grogan kicked a 30-yard field goal to cut the Sooners lead to 31-20 with 1:00 left in the third quarter.
Oklahoma was marching on the Cowboys on the next possession when Perine fumbled and Kenneth Edison-McGruder recovered for OSU at their own 18-yard line.
Perine was shaken up on the play and after being attended to, walked straight to the lockerroom.
Oklahoma State moved the ball into Sooner territory, but the drive bogged down and Grogan missed a 38-yard field goal attempt wide left.
OU took the ball at their own 21, and it took them one play to score, as Joe Mixon went 79 yards for a touchdown, the longest run of his career, giving the Sooners a 38-20 lead with 9:35 to play in the fourth quarter.
Mixon finished with 99 yards rushing on 11 carries.
OSU got into OU territory on the next possession, but Rudolph threw incomplete after being hit as he threw by Ogbonnia Okoronkwo on 4th down and OU took over on downs.
The Sooners ran out the clock to clinch their 9th straight win.
OU outgained OSU 629 yards to 403.
It was OU's first conference title-clinching win at Owen Field since 1985 vs. Nebraska.
Oklahoma has won 12 of the last 14 Bedlam games.
The Sooners finish the regular season 10-2, and 9-0 in Big 12 play.
Bedlam was their 16th straight Big 12 win.
The Cowboys fall to 9-3, and 7-2 in conference play.
OU is likely headed to the Sugar Bowl on January 2nd, while OSU is expected to play in the Alamo Bowl.
Official bowl announcements will be made on Sunday, December 4.