FAIRFAX, Va. (AP) -- Ryan Pearson scored 17 points and grabbed 10 rebounds, and George Mason held off Lamar in a 75-71 victory on Saturday.
Sherrod Wright finished with 13 points for George Mason (23-6), which was hosting the Cardinals (17-10) as part of the Bracket Buster series.
Brandon Davis led the Cardinals with 13 points and Devon Lamb added 12.
George Mason led by 13 points at halftime and pulled ahead by 17 with 15:28 left to play.
The Cardinals rallied and trailed by one when Mike James (10 points) got a steal and drove for a dunk that put Lamar up 69-68 with 3:21 to play.
George Mason's Andre Cornelius responded with a three-pointer to put the Patriots back in front and Bryon Allen's jumper made it 73-69 with 2:08 left.