Both teams shot 51 percent, but the Fighting Camels (3-2) made 12 of 24 3-pointers, led by Gensler's five, to the Governors' 6 of 21.
Austin Peay led 49-46 on Zach Glotta's 3 early in the second half before Clemons scored nine points in a 13-2 run for a 59-51 lead. Austin Peay closed to 75-72 on Dayton Gumm's free throw with 48 seconds left.
Gensler's back-to-back 3s put Campbell up 29-27 and the Camels led 41-37 at halftime behind Clemons' 18 points. Gensler hit four 3s in the half and Campbell made 7 of 16 from long distance.