There were eight ties and nine lead changes before the Greyhounds (18-9, 10-5 Metro Atlantic Athletic Conference) closed the first half with a 7-1 spurt to lead 37-32 at intermission.
The Golden Griffins (16-10, 9-6), who defeated Loyola 91-79 on Jan. 31, trailed by as many as 10 in the second half and could get no closer than three until Billy Baron's 3-pointer with 48 seconds remaining made it 66-64.
Cormier missed a layup and Baron a 3-pointer, then Anthony Winbush hit two free throws with 5 seconds left. Baron missed another 3-pointer with 2 seconds showing.
Julius Brooks added 13 points on perfect shooting for the Greyhounds.
SMU has signed a second player from Australia, 6-foot-11 forward Harry Froling, to a national letter of intent. The Mustangs previously signed guard Tom Wilson from Australia.
There's nothing to suggest the Jayhawks won't end up atop the Big 12 for a 13th season in a row. But what about a return to the Final Four?
Colorado State graduate transfer John Gillon has chosen Syracuse, giving the Orange a potential starter at point guard entering the 2016-17 season.