"Yeah, you know, we just had a little bit of a revenge in us," Mayfield said. "We really wanted to come out and swing the sticks."
But it wasn't without some early troubles, as the Sooners stranded five runners over the first three innings, a pair in scoring position.
Much of the same problem as Saturday's loss, where they left 11 on.
That would change in the fourth.
After Carey evened things up at one piece with his homer over the left field wall—Pepperdine took the initial lead on right fielder Bryan Langlois' RBI double into the left field corner—an error allowed OU to finally plate a runner on base.
Waves second baseman Hutton Moyer booted a routine grounder and a batter later, Mayfield slammed a two-run double to give OU its first lead at 3-1.
"I was growing a little frustrated with getting guys on [and not getting them in]," said OU head coach Sunny Golloway. "But again, it's about clutch hitting. And they did that yesterday against [Jonathan] Gray. They get second and third and two outs and they get a clutch hit. We had second and third yesterday quite a bit. We had bases loaded quite a bit. We had second and third earlier today and we weren't punching them across.
"So, we've gotta be able to get the lead. We've gotta be able to play our game. We gotta be able to have the threat of whether we're doing it or not, squeeze bunting and double steal, hit and run."
White followed that eventual timely hit with a mammoth two-run jack also over the left field wall.
Meanwhile, Sooner starter Adam Choplick did enough to get the victory—he tossed 5 1/3 innings of one-run ball while striking out three and giving up four hits and three walks.
"Definitely felt like I had better stuff than what I did my first start," Choplick said. "I was calm, more in control. But still need to improve."
Reliever Billy Waltrip came in and shut down a threat in the sixth with a pair of strikeouts, part of his seven in 3 2/3 innings.
He gave up just a hit and a walk over that stretch.
OU added on to its lead in the eighth with three insurance runs, two on center fielder Craig Aikin's double to right and another on the third homer of the day, this time a blast off Mayfield's bat.
"Everyone's seeing the ball pretty good right now," Mayfield said. "And we're just trying to square it up. The main thing we're focusing on is hard line drives and ground balls, and the home runs will take care of themselves. So, that was our focus today."
Jackson McClelland suffered the loss for Pepperdine after he was tagged for five earned runs on five hits and two walks in four innings.
The Sooners (11-1) get back to action with a midweek game at 6:30 p.m. CT Tuesday at Texas-Arlington.
"Well, it's important," Golloway said. "If you want to host regionals, if you want to be in potential to be a national seed to host a super if you can win a regional, you better win your midweek games. That's all there is to it. So, those games are very important to us."