FAYETTEVILLE, Ark. (AP) -- BJ Young's last-minute recovery was the perfect addition to Marshawn Powell's career night for Arkansas.
Young's floater in the closing minute helped the Razorbacks snap a three-game losing streak with an 81-78 win over Oklahoma on Tuesday.
Powell added a career-high 33 points to help Arkansas (4-3), which avoided its first four-game losing streak since closing out the 2009-10 season with six straight losses. The junior bested his previous career high of 29 points, which was set against Appalachian State in 2009.
The Sooners (6-2) rallied from an 11-point second-half deficit to take a 78-77 lead in the closing minutes.
However, Young's running shot in the lane put Arkansas back ahead for good.
Romero Osby led the Sooners with 22 points, while Amath M'Baye finished with 14 and Steven Pledger 12. Oklahoma was 31 of 56 (55 percent) from the field.
Arkansas, which led all except in the early going, led by as many as 11 points early in the second half -- taking a 53-42 lead after a basket on the break by Hunter Mickelson.
Oklahoma rallied and took a 78-77 lead in the closing minute after a second straight 3-pointer by Pledger with 22 seconds remaining.
Young, however, quickly drove into the lane on the other end for the Razorbacks and hit his running floater to put them back up 79-78 with 15 seconds remaining.
Osby then missed a long jumper with 4 seconds remaining, and Powell grabbed the rebound for Arkansas. He was fouled and then hit two free throws with 2.4 seconds left, and he followed that up with a deflection to keep the Sooners from getting an open look as time expired.
Powell missed all but two games last season with a torn ACL in his right knee, one year after earning second-team All-Southeastern Conference honors. He entered the game averaging 13.3 points per game this season, including a 19-point effort in a loss last week to Syracuse.
The 6-foot-7 forward had that many points by halftime against Oklahoma, helping Arkansas extend its lead to as many as nine points in the first half. His layup put the Razorbacks up 31-22, and he was 7 of 9 from the field in the half, including a perfect 3 of 3 on 3-pointers.
He finished a career-best 4 of 6 from behind the arc, topping his previous best of two 3-pointers in a game. Arkansas was 30 of 57 (52.6 percent) from the field, including 9 of 22 on 3-pointers.
The Razorbacks led 69-61 after an inside basket by Ky Madden, but Oklahoma closed to within 69-68 thanks to a 7-0 run that was capped by a jumper by M'Baye.
Arkansas used a pair of last-second shots to hold off the Sooners down the stretch. The Razorbacks were called for a shot-clock violation while up 73-68, and Oklahoma closed to within 73-70 after an inside basket by Osby.
With the shot clock once again winding down, Madden found Powell for a jumper on the baseline that put Arkansas back up 75-70.
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