Swain hit a baseline jumper and a layup and Paul Atkinson made 1-of-2 free throws before the Minutemen got on the board in OT with Tre Mitchell’s jumper. Eric Monroe and Atkinson combined for three free throws for an 83-77 lead before Carl Pierre hit a 3-pointer with two seconds left.
Atkinson added 15 points and had 10 rebounds and Matthue Cotton scored 13 points for Yale (9-3). Eric Monroe had eight assists.
UMass led 45-40 at halftime and Bruner tied it at 75-all with a dunk with 49 seconds left to play in regulation.
Pierre scored 26 points and hit a career-high eight 3-pointers for UMass (5-6), which has lost six straight. Mitchell scored a career-high 24 points with nine rebounds and Sean East II added 16 points.
UMass plays Maine at home next Friday and Yale plays at Clemson on Dec. 22.