Arkansas overcame a 23-point deficit, send the game to overtime with a buzzer-beater but ultimately fell at Dayton, 85-81, in the last game of 2015.
The Razorbacks (6-6) are at exactly .500 after 12 games. A final nonconference game against Texas Tech, part of the SEC-Big 12 Challenge, awaits in late January. Arkansas opens SEC play at No. 20 Texas A&M on Saturday.
Anthlon Bell hit a 3-pointer with 1.4 seconds left in regulation to send the game to overtime. But Arkansas turned the ball over five times in those final five minutes and Dayton went on a 7-0 in response.