OKLAHOMA CITY — Some teams believe the postseason is time for reinvention. Oklahoma was hoping that would happen. After a disappointing regular season, there wasn’t anything else to go with for the Big 12 tournament.

Whether the Sooners were reborn or incredibly well-disguised Wednesday is up for debate, but they looked like a different team in a 4-1 pool-play victory over top-seeded Texas A&M.

Beating the Aggies (42-15) was surprising in one way and not so much in another. The conference’s regular-season champions swept the Sooners during the regular season with only the first game of the series being close. But Texas A&M also came to Bricktown Ballpark on a six-game losing streak.

The stunning part was how OU (33-23-1) won.

Pitching had been the Sooners’ Achilles heel this season. Starters lasting past the sixth inning have been rare. Holding opponents to less than five runs has been more rare.

Andrew Doyle did both against the Aggies.

The sophomore right-hander tossed a complete-game five-hitter and struck out 12. He set career highs in both innings pitched and strikeouts.

Without a doubt, it was the best Doyle or any Sooner pitcher has thrown this season.

“It was the first time I’ve been able to command all three of my pitches and throw them for strikes,” Doyle said after becoming only the second OU pitcher to throw a complete game this season.

It was a remarkable turnaround for Doyle. He threw just 32⁄3 innings and gave up seven hits last Saturday against Oklahoma State. He went just four innings in his regular-season start against the Aggies April 12. Both ended in lopsided losses.

Obviously, something changed.

“When he was at Olsen Field he was a two-pitch guy,” Texas A&M coach Rob Childress said. “He had a fastball and a slider and everything was hard. Today, he really found a change-up and executed all three of them to perfection.”

Doyle (8-4) only made two mistakes all afternoon. He hung a slider to Kevin Gonzalez in the third inning that turned into a solo home run and gave up a two-out double to Brian Ruggiano in the fifth.

Neither mistake came with a runner on base. Doyle only issued two walks and the Aggies only stranded four baserunners.

“We came in with an extremely positive attitude today,” Doyle said. “We just stayed with it and tried to match my offense’s intensity on the mound.”