(Photo credit: Reese Strickland-Imagn Images)

Nastja Claessens recorded 14 points, eight rebounds and four steals and No. 12 seed Kansas State closed the game with a 21-0 run to post a 58-51 upset of No. 5 seed Texas Tech on Thursday in the second round of the Big 12 tournament at Kansas City.

Taryn Sides scored 13 points and Aniya Foy added 12 for the Wildcats (17-16), who beat Cincinnati in Wednesday's first round. Tess Heal added 10 points for Kansas State, which trailed 51-37 with 7:43 remaining before going on the epic burst.

No. 21 Texas Tech (25-7) looked to be in great shape after Jalynn Bristow and Snudda Collins (14 points) opened the fourth quarter with baskets. But the Red Raiders missed their last 13 field-goal attempts to go with four costly turnovers during a stunning collapse that marked their fourth loss in the past six games.

Claessens split two free throws with 2:39 left to give Kansas State its first lead at 52-51. Heal added a driving basket and Sides and Heal each made two free throws as Kansas State earned a quarterfinal matchup against No. 4 seed Oklahoma State on Friday.BYU 70, Utah 52

Delaney Gibb registered 19 points, eight assists, five rebounds and four steals to help the No. 9 seed Cougars rally to the victory over the No. 8 seed Utes for their fifth consecutive victory.

Lara Rohkohl had 12 points and eight rebounds before fouling out and Brinley Cannon added 12 points for BYU (22-10), which outscored Utah 43-16 in the second half. The Cougars trailed by seven before scoring the final 15 points of the third quarter and then continued their domination in the fourth and next face top-seeded TCU in Friday's quarterfinals.

Lani White scored 20 points for the Utes (19-12), who were 7 of 27 from the field in the second half, including 1 of 14 from 3-point range. Utah's largest lead was 11, coming after Chyra Evans opened the third quarter with a basket, but the lead got away as the Utes lost to the rival Cougars for the third time this season.

--Field Level Media