The Cougars (19-8, 11-4), who won for the seventh time in eight games, earned a split of their season series with the Eagles (11-16, 5-9). Georgia Southern held Charleston to its lowest output of the season when the Eagles won 51-47 on Jan. 17.
Charleston led 61-38 with 7:51 remaining before a 3-pointer by Eric Ferguson started a 19-2 run that brought Georgia Southern to within six, 63-57, at the 1:38 mark.
Layups by Anthony Stitt and Baru restored a 10-point margin. Stitt finished with 11 points.
Ferguson scored 22 points for Georgia Southern and C.J. Reed added 16. Reed, who played his first three college seasons for Bethune-Cookman, now has 2,004 career points.