Virginia bounced back after blowing a large first-half lead. The final three minutes belonged to the Cavaliers (19-8, 10-4 ACC).
Reynolds' three-point play brought the Cavaliers within 69-67 with 2:45 left. Jason Cain then recovered a Singletary miss and scored to tie the game at 69-69.
The Cavaliers, who at one point led 22-6, didn't make a field goal in the final 8:41 of the first half and trailed, 35-31, at the break.
A 9-2 stretch gave Georgia Tech a 58-52 lead with 8:07 left.