No. 3 Kansas 82, Oklahoma 70: NORMAN, Okla. -- Marcus Morris scored 23 points and grabbed nine rebounds, twin brother Markieff added 19 points and 10 boards and No. 3 Kansas moved into a tie for first place in the Big 12 by beating slumping Oklahoma.
The Jayhawks (27-2, 12-2) shot 57 percent, making more than half of their shots from the field for the 21st time this season, and notched their seventh straight win in the series.
Kansas opened a double-digit lead in the opening 8 minutes and led by at least 10 points for the final 27 minutes but struggled to put away the Sooners (12-16, 4-10), who lost their seventh straight game.
Kansas State 80, No. 20 Missouri 70: MANHATTAN, Kan. -- Jacob Pullen scored 24 points, including a rare career milestone, and Kansas State pulled away in the final minutes to beat No. 20 Missouri.
Curtis Kelly added 15 points and six rebounds for the resurgent Wildcats (20-9, 8-6), who have won six of seven and are battling Missouri (22-7, 8-6) for the fourth and final bye in the Big 12 tournament.
Pullen scored 11 quick points at the game's outset, becoming one of two Kansas State players to go over the 2,000-point mark. He picked up his fourth foul with 7:16 left and was on the bench when Missouri's Nino Williams hit a 3-pointer for a 60-60 tie with 6:10 to go.
Oklahoma State 70, Texas Tech 68: STILLWATER, Okla. -- Jean-Paul Olukemi scored 20 points, including the final six for his team, and Oklahoma State broke a four-game losing streak with a win over Texas Tech.
Olukemi's three-point play put Oklahoma State ahead 69-68 with 25.4 seconds left. After Texas Tech's Mike Singletary traveled with 8 seconds remaining, Olukemi made one of two free throws. Texas Tech's John Roberson missed a 3-point attempt at the buzzer.
Iowa State 83, Nebraska 82, OT: AMES, Iowa -- Diante Garrett scored 17 points, including a key layup in overtime, and Iowa State beat Nebraska to snap a 10-game losing streak.
Scott Christopherson added 14 points for the Cyclones (15-14, 2-12 Big 12), who handed the Cornhuskers a potentially crushing blow to their NCAA tournament hopes.
Toney McCray's 3 with 2:14 left put the Huskers up 79-77 in OT, but Melvin Ejim quickly tied it with a jumper. Garrett then sliced through traffic to give Iowa State an 81-79 lead, and Scott Christopherson hit a free throw to make it 82-79 with 23 seconds left.
Lance Jeter had 27 points for Nebraska (18-10, 6-8), including a 3 with 3.4 seconds left in regulation to send the game into OT.