Oklahoma hadn't scored a run on Cowboys ace Andrew Heaney in 17 innings this season.
When they finally broke through Wednesday – on Garrett Carey's walk-off home run in the ninth inning – it was enough to claim the opener of the Big 12 Tournament at the Chickasaw Bricktown Ballpark.
Leading off the bottom of the ninth, Carey drilled Heaney's 1-1 pitch into the stands in left field for a 1-0 win.
Heaney, who shut out OU on three hits in the Bedlam series opener in Tulsa, had allowed just two hits – both singles – into the ninth at Chickasaw Bricktown Ballpark. But the Sooners were getting zeroes from the mound, too, first by starter Dillon Overton, then closer Steven Okert.