Gulley and Meier hit three 3-pointers apiece for the Panthers (17-12), who won the BracketBusters game for their second straight victory. Kaylon Williams added 10 assists.
Rakim Sanders posted game highs of 21 points and nine rebounds for the Stags (16-11), a Metro Atlantic Athletic Conference team whose six-game winning streak ended. Colin Nickerson added 11 points.
The Horizon League’s Panthers seemed in control most of the way, but a 10-0 run that ended with Ryan Olander’s 3-pointer propelled Fairfield in front 61-60 with 3:08 to go.
Shaquille Boga hit two free throws for the Panthers before Sanders made a layup to restore the Stags’ lead at 63-62.
But then Gulley drilled a jumper for a 64-63 Milwaukee edge.
Fairfield had three shots in the final minute but failed to convert.