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.
The LSU TIgers didn't make much hay with Ben Simmons and now must regroup and rebuild around Antonio Blakeney and Craig VIctor.
Oregon could lose multiple players to the NBA next spring, so the Ducks are preparing by pursuing plenty of scorers and an elite frontcourt prospect.
Most of the first-round picks in the 2017 NBA draft haven't played a minute in a college game. Our recruiting experts identify the names to know.