Freshman Jawun Evans had 22 points, eight assists and six rebounds to help Oklahoma State upset No. 3 Kansas 86-67 on Tuesday night.
The Cowboys beat Kansas in Stillwater, Okla., for the third straight time and the fifth in seven years.
Jeff Newberry scored 13 points and Jeffrey Carroll added 11 for the Cowboys, who had lost four straight. Oklahoma State shot 50% from the field, made 11 of 21 three-point attempts and outrebounded the Jayhawks, 38-31.
Frank Mason III scored 14 points and Perry Ellis added 13 for Kansas (15-3, 4-2 Big 12), which has lost two of its last three and fell out of a tie for the Big 12 lead.
The Cowboys (10-8, 2-4) nearly knocked off then-No. 2 Oklahoma six days earlier, but they missed a last-second shot and lost by two.
Georgetown 81, at No. 5 Xavier 72: Tre Campbell scored a career-high 21 points — 17 in the first half — and the Hoyas' front line helped them hand the Musketeers their first home loss of the season. Georgetown (12-7, 5-2) Big East) led by as many as 11 in the second half.
at No. 7 Maryland 62, Northwestern 56 (OT): Melo Trimble scored 18 points, Diamond Stone made a pivotal three-point play with 1:13 left in overtime and the Terrapins squeezed past the scrappy Wildcats.
at No. 8 Southern Methodist 77, Houston 73: Nic Moore had 23 points and had some part in five consecutive SMU baskets down the stretch as the eighth-ranked Mustangs (18-0, 7-0 American Athletic Conference) remained Division I's only undefeated team.
at No. 10 Texas A&M 71, Louisiana State 57: Jalen Jones scored 20 points and freshman Tyler Davis tied a season high with 18 as the Aggies (16-2, 2-0 Southeastern Conference) won their ninth in a row.
at No. 13 Virginia 69, Clemson 62: Malcolm Brogdon scored 20 points and Anthony Gill had two big baskets late as the Cavaliers (14-4, 3-3 Atlantic Coast Conference) squandered most of a 13-point lead before holding off the Tigers.
at No. 16 Providence 71, No. 18 Butler 68: Ben Bentil scored 13 of his 20 points in the second half, and the Friars (16-3, 4-2 Big East) rallied late to improve to 3-1 against ranked opponents. Kellan Dunham led Butler (13-5, 2-4) with 21 points, including six three-pointers.
No. 24 South Carolina 77, at Mississippi 74 (OT): Michael Carrera scored 19 points, Laimonas Chatkevicius added 17 and the Gamecocks (17-1, 4-1 Southeastern Conference) rallied in the final minutes. Ole Miss led, 64-53, with 5:17 remaining in regulation, but South Carolina tied it at 66 with 43 seconds on a layup by Carrera. Carrera also converted a three-point play in overtime to give the Gamecocks a 75-72 lead with 29.3 seconds left. Stefan Moody scored 24 points for the Rebels (12-6, 2-4), who have lost three in a row.