Oklahoma's football team controlled the second half in a 63-27 win over Texas Tech on Saturday at Owen Field in Norman.
The Sooners struck first on an 8-play, 62-yard drive, capped by an 11-yard touchdown run by Joe Mixon to make it 7-0 OU midway through the first quarter.
Then the Sooner defense stepped up, with Eric Striker intercepting a pass by Patrick Mahomes and returning it 30 yards to the Tech 3-yard line.
On the next play, Samaje Perine bulled his way into the end zone for a touchdown and a 14-0 lead.
Texas Tech got a 34-yard field goal from Clayton Hatfield late in the first quarter to make it 14-3.
Early in the second quarter OU added to the lead when Mixon scored on a 17-yard touchdown run to make it 21-3 Sooners with 13:27 to play in the second quarter.
Oklahoma looked to be driving for more points when Baker Mayfield completed a pass to Jarvis Baxter, who fumbled.
The bouncing ball went right to Jah'Shawn Johnson, who returned it 38 yards into Sooner territory.
Tech capitalized, with Patrick Mahomes passing to Reginald Davis for a 6-yard touchdown, cutting the OU lead to 21-10 with 9:32 to play in the first half.
The next Oklahoma possession also resulted in a turnover, as Mayfield was intercepted by Justis Nelson, who returned it 45 yards to the OU 32.
Tech punched it in again on a 13-yard touchdown run by DeAndre Washington to cut the Sooner lead to 21-17 with 7:05 to play in the first half.
Oklahoma's offense finally regained its form on the next possession, with Mayfield passing to Sterling Shepard for a gain of 33.
Samaje Perine finished the drive with a 10-yard touchdown run to extend OU's lead to 28-17 with 3:31 to play in the first half.
The Sooners quickly got the ball back, as Charles Tapper deflected a pass by Mahomes, and Frank Shannon settled under it, falling to the grass at the Tech 20-yard line with the interception.
Oklahoma was not able to score, though, as Dahu Green dropped a sure touchdown pass, then Austin Siebert missed a 32-yard field goal.
Tech was driving late in the first half, but Mahomes was intercepted in the end zone for a touchback by DakotaAustin.
Austin was playing after starting cornerback Zack Sanchez was injured on the opening possession of the game.
Oklahoma built on their lead on the opening drive of the second half, as Baker Mayfield passed to Mark Andrews for a 13-yard touchdown to make it 35-17 Sooners.
OU's next drive also resulted in a score, with Perine scoring on a 6-yard touchdown run to make it 42-20 Sooners with 7:04 to play in the third quarter.
Tech responded with a one-yard touchdown plunge from Mahomes to trim the Sooner lead to 42-27.
The Red Raiders never got closer.
Mayfield passed to Durron Neal for a 15-yard touchdown late in the third quarter to make it 49-27.
Mayfield completed 15 of 22 passes for 212 yards and two touchdowns.
Perine added to his total with a 2-yard touchdown run midway through the fourth quarter to give the Sooners a 56-27 lead with 8:18 to play in the game.
Perine finished with 201 yards rushing and four touchdowns.
An Alex Ross 9-yard touchdown run later in the game made it 63-27 Sooners.
Oklahoma improves to 6-1 on the season, 3-1 in conference play, while Tech drops to 5-3 overall, 2-3 in the Big 12.
The Sooners visit Kansas next Saturday.