Arkansas blew a 17-point lead in the final six minutes and lost 69-66 to Stanford on Friday at Barclays Center in New York.
Manuale Watkins was called for goal-tending a shot by Marcus Allen with 2.7 seconds remaining to give the Cardinal the lead. Stanford made two subsequent free throws after Arkansas coach Mike Anderson was charged with a technical foul and Dusty Hannahs' half-court heave rimmed out at the buzzer.
The Cardinal (3-3) finished the game on a 21-1 run. Arkansas didn't make a shot after Watkins' layup with 6:39 remaining.
The Razorbacks led by as many as 20 points in the first half and 41-31 at halftime.