Charlotte's Mike Thorne Jr. had a putback with 55 second left to tie the game at 61. Then a UNC Asheville turnover led to Torin Dorn's alley-oop dunk with 24 seconds left. Charlotte's Kem Ubaru answered with a layup with 7 seconds left for 63-all.
Henry made just 3 of 12 shots for eight points for Charlotte (4-2). The 49ers were led by Braxton Ogbueze with 15.
Roberts had two blocks with a little over a minute left in regulation to keep it at 55-all. He then contested Ogbueze's missed layup with 19 seconds left, but UNC Asheville turned it over with 5.7 left. Roberts blocked Henry's runner in the lane at the buzzer to force overtime.