FAYETTEVILLE, Ark. -- Keith Hornsby hit a 3-pointer at the buzzer to give LSU an 81-78 victory over No. 18 Arkansas on Saturday.
The Tigers (22-9, 11-7 Southeastern Conference) hit 3-pointers on their final two possessions to erase a 3-point deficit. Jalyn Patterson's 3-pointer with 57.8 seconds remaining tied the game 78-78.
Arkansas had a chance to take the lead late in the game, but Harris had a shot blocked at the rim by Jarell Martin to give the Tigers the ball with 22.9 seconds left. After LSU coach Johnny Jones called a timeout, Josh Gray penetrated the lane and found Hornsby open in the corner for the game winning shot.
Alandise Harris made six free throws and Anthlon Bell added a 3-pointer in the closing minutes to give Arkansas the lead. The Razorbacks (24-7, 13-5) trailed by as many as 12 points in the first half.
Martin scored 27 points and Patterson had 20 for the Tigers, who were playing without second-leading scorer and leading rebounder Jordan Mickey, who injured his shoulder in a game against Tennessee on Wednesday.
Bobby Portis had 21 points and a career-high 15 rebounds for the Razorbacks. Michael Qualls added 15 points.
The Tigers made 9 of 21 attempts from 3-point range, including six by Patterson. LSU committed more turnovers than Arkansas, but capitalized on the chances it had, scoring 18 points off 12 Razorbacks turnovers.
LSU led 41-35 at halftime and by as many as seven points in the second half. Bell and Ky Madden each made 3-pointers within the span of 43 seconds to help the Razorbacks pull within one point with 7:17 remaining.
LSU: The Tigers snapped a four-game losing streak in games played at Bud Walton Arena. The Tigers hadn't won in Fayetteville since 2009.
Arkansas: The Razorbacks finished one win shy of tying the program record for SEC wins in a season. Arkansas won 14 SEC games during its NCAA championship season in 1994 while playing two fewer conference games.
Both teams will play next week at the SEC Tournament in Nashville, Tennessee. Arkansas will be the No. 2 seed in the tournament, while LSU's seeding has yet to be determined.