The Sooners (22-9) will play archrival Oklahoma State in a semifinal today.

Stevenson’s 3-pointer with 4:16 left to put the Sooners up, 50-49, and she hit another 3 and made a layup to keep her team ahead in the final minutes.

Griner, suspended two games for punching a Texas Tech player March 3, had 13 points and set a tournament record with 10 blocks for defending champion Baylor (23-9).

Morghan Medlock led Baylor with 18 points and Shanay Washington had 12.

Baylor’s Melissa Jones missed a 3-pointer that would have tied it with six seconds left, and Oklahoma’s Abi Olajuwon came down with her 10th rebound, got fouled, and made the free throws.

The NCAA suspended the 6-foot-8-inch Griner for one game after she punched and broke the nose of Texas Tech’s Jordan Barncastle.

Nebraska 63, Kansas St. 46 — Kelsey Griffin scored 16 of her 24 points in the first nine minutes of the second half to help the unbeaten and third-ranked Cornhuskers overpower the Wildcats in the quarterfinals of the Big 12 tournament in Kansas City, Mo.

Ninth-seeded Kansas State (14-18) gave Nebraska (30-0) all it could handle for a half from before Griffin started to take over.

Cory Montgomery added 13 points for Nebraska, which will meet Texas A&M in a semifinal today.

Texas A&M 77, Texas 64 — Tanisha Smith scored 21 points and Danielle Adams and Tyra White added 18 apiece as the No. 11 Aggies used a big second-half run to get past the Longhorns in a Big 12 tournament quarterfinal in Kansas City.

Smith, White, and Adams sparked a 20-2 run to build a double-digit lead midway through the second half that put Texas A&M (23-7) in control. The trio accounted for 35 of the Aggies’ first 40 points. Ashleigh Fontenette scored 21 points for Texas (22-10), but the Longhorns committed 26 turnovers.

Oklahoma St. 62, Iowa St. 59 — Andrea Riley scored 43 points to set the Big 12 tournament single-game record for the second straight game and the 20th-ranked Cowgirls upset the No. 14 Cyclones in the quarterfinals.

Riley made six of her first seven shots, then missed 17 in a row before warming up again late in the game to carry the seventh-seeded Cowgirls (23-9) into the semifinals. Riley, who finished 16 for 44 from the field, also became the Big 12’s career leading scorer and set the conference’s single-season scoring record.

Anna Prins had 15 points for Iowa State (23-7).

Stanford 72, Arizona 52 — Nnemkadi Ogwumike scored 25 points and the No. 2 Cardinal got a second-half boost from injured star Jayne Appel in a difficult victory over the Wildcats in the Pac-10 tournament quarterfinals in Los Angeles.

Jeanette Pohlen scored 15 points on five 3-pointers for the Cardinal (29-1), who won their 20th straight and advanced to face California in today’s semifinals.

Stanford led, 43-40, with 13:21 to play when coach Tara VanDerveer finally used Appel, who has a sore right ankle. The Cardinal immediately scored 8 straight points in a 19-6 run.

Appel had 7 points and three rebounds in her 10:06 of playing time.

UCLA 60, Oregon St. 44 — Jasmine Dixon scored 14 points, Markel Walker added 10, and the No. 23 Bruins (23-7) rolled into the Pac-10 semifinals by routing the Beavers in Los Angeles.

Conference USA final — Brett Benzio scored 11 points and grabbed 17 rebounds as top-seeded Tulane (26-6) built a big lead early and beat Alabama-Birmingham, 62-54, in Tulsa to earn its 10th trip to the NCAA Tournament.

Southland final — In Katy, Texas, Darika Hill had 22 points and 11 rebounds as top-seeded Lamar (26-7) cruised to an 86-59 win over Texas A&M-Corpus Christi to gain a berth in the NCAA Tournament.