Oklahoma State's and Oklahoma's baseball teams will both play in the evening session to start the Big 12 Tournament on Wednesday at Chickasaw Bricktown Ballpark.
The No. 7 seeded Sooners will take on No. 2 Baylor at 4 p.m. in the first round, with the No. 3 seed Cowboys will take on No. 6 TCU in a game scheduled for 7:30 p.m.
Oklahoma State won their series over the Horned Frogs, 2-1, in late March in Fort Worth.
Oklahoma dropped two of three in Waco in mid-April.
If both teams win — or both teams lose — they'll play each other Thursday.