Kennesaw State (6-22, 3-12 Atlantic Sun Conference) pulled away in the final minute of a tight contest, as neither team led by more than seven at any point.
Coleman threw down a dunk with 1:02 to play to put the Owls up 61-58 before Yonel Brown added a pair of free throws with 41 seconds remaining.
Aaron Graham hit a 3-pointer with 30 seconds left to bring Stetson (7-20, 5-10) within 63-61. But Delbert Love was fouled and hit two free throws before Graham missed two late 3-pointers as Kennesaw State held on.
Love added 16 points for the Owls and Nate Rucker scored 11.
Kentwan Smith led the Hatters with 19 points. Brian Pegg added 14 points and Graham had 13.
Florida Gulf Coast 75, Mercer 61: Brett Comer had 15 points and Florida Gulf Coast defeated Mercer in front of a record crowd of 4,664.
Jamail Jones added 11 points and 13 rebounds for FGCU (18-10, 12-3) which moved into a first-place tie with Mercer (21-7, 12-3) in the Atlantic Sun Conference standings. The Eagles also evened the season series after Mercer defeated FGCU 68-55 in the first meeting Jan. 23 in Macon.
Both teams have three conference games remaining.
Florida Gulf Coast scored 15 straight points within a 4-minute stretch to extend a two-point lead to 57-40 with 5:39 left. The Eagles led by no less than 14 from there and made 12 of 18 free throws over the final 4 minutes.
Chase Fieler had 14 points for FGCU which outrebounded Mercer 48-29.
Langston Hall had 16 points and Ike Nwamu added 11 points for the Bears.
Chattahoochee Tech 88, Middle Georgia 70: Alyja Hennings scored 22 points with four assists and six steals to lead the Golden Eagles to the GCAA victory.
Chattahoochee Tech (22-5, 12-5) built a 40-17 lead at the half and cruised to the win.
Former Sprayberry High School standout Alijah Bennett scored 21 points, while Markez Dix added 11 points and three rebounds.
Middle Georgia 71, Chattahoochee Tech 60: Tiana Gray scored 22 points and grabbed 11 rebounds but it wasn’t enough as the Golden Eagles dropped the GCAA game.
Amber Mendes scored 13 points and Steara Mitchell added 10.