The Buccaneers (10-7, 4-2 Big South) shot just 31 percent (20-65) but only turned the ball over three times all game while forcing 16 from Presbyterian. Charleston Southern also scored 23 points in 30 trips to the foul line.
The Blue Hose (6-13, 2-4) made 24 of 50 field goals and were 9 of 13 at the line. Jordan Downing led with a season-high 29 points.
Presbyterian battled to within four, 58-54 at 3:16 remaining, when Downing scored a 3 and a layup. But Nimley and Will Saunders knocked down three straight 3s.