Jacob Evans gave the Sooners five strong relief innings on the mound, and Matt Oberste drove in four runs, including a two-run, homer in the third that built a 5-1 lead.
That was more than enough, with Evans leading a three-pronged OU shutdown effort on the mound.
Ethan Carnes started and went 2 1/3 innings, allowing one run. Kyle Hayes secured the final five outs for the save.
In between, Evans carried five critical innings, after a rough relief outing against Kansas State on Saturday.
“When I came out yesterday, Coach Golloway told me to get my head straight, because we’re going to need me (Sunday),” Evans said. “I learned a lot about myself today. I struggled a little earlier. I just had confidence in my coaches and learned a lot about myself.”
And the Sooners learned how to dogpile, something that might have seemed unlikely as recent as a week ago, when they stumbled into the Big 12 Tournament having lost nine of their last 12 games.
“We’ve been together all year,” Oberste said. “We’re a great team. We’ve got great defense. We’ve got good pitching. We’ve got good at-bats. “These last few weeks, our bats have been struggling, but we’ve been able to figure it out and we came out on top.”