Rashun Davis added 15 points for the Highlanders (16-9, 6-4 Big South), who have won three of their last four, all those victories coming on the road. Radford shot 55.6 percent.
Markus Terry, who came in averaging 6.7 points per game, scored a career-high 29 for Presbyterian (5-20, 1-9), which was coming off its first victory after having lost 10 in a row. Jordan Downing added 23 points.
The Blue Hose were down just a point on two Reggie Dillard free throws with 7:03 left but the Highlanders then went on a 14-4 run capped by an Anderson 3-pointer to lead 75-64 with 3:28 left. Both teams then went scoreless over the next 1:23 before Radford finished the game on an 8-2 run.