The No. 4 seeded Oklahoma Sooners baseball team is set to open the Big XII Championship against No. 5 Oklahoma State. The Big XII Championship is a double-elimination tournament starting on Wednesday and will be played at Chickasaw Bricktown Ballpark in Oklahoma City.

The game is set for 9:00 AM Wednesday, with the winner moving on to play the winner of the No. 1 Baylor and No. 8 Kansas State game. at 4:00 PM on Thursday. The loser will play Thursday at 9:00 AM.

The Sooners have won 20 of the last 27 games and are ranked No. 25 in Collegiate Baseball’s poll. The are also ranked No. 28 in the NCBWA poll and receiving votes in the ESPN/USA Today Coaches’ poll. OSU is not ranked and is 5-5 in its last 10 games.

You can view the complete tournament bracket here.

The Sooner softball team is also playing in postseason action this weekend, taking on No. 13 Arizona in the NCAA Super Regional. The best-of-three series is being played in Norman and starts on Friday at 1:00 PM.

The winner of the series will advance to the women’s College World Series. The Sooners are coming into the series at 48-8, while the Wildcats are 38-17. The Sooners swept the Wildcats in Tuscon last year in the Super Regional to advance to the CWS.

The second game is scheduled for 11:00 AM on Saturday and if necessary, the third game will be played at 1:30. You can view the entire women’s Regional college world series brackets here.

Both softball games will be televised, Friday’s being carried on ESPNU and Saturday will air on ESPN. The baseball game against Oklahoma State will be broadcast on Big12Sports.com and you can listen on the radio on KREF 1400 if you are in the area.