The Barons led by as many as ten in the third quarter, but Mike Hanson had to make a pair of free throws with 12 seconds left to force OT.
Nate Less made three 3-pointers in the fourth quarter and led the Cougars with a career high 17 points. Swetman finished with 15 points and eight assists. Jake Apthorpe had a double-double, 11 points and 11 rebounds.
Phillip Pelligrino led all scorers with 20 points for Brighton.