The Bucks led the Celtics by 19 in the fourth quarter and four in the final minute.
But Boston completed its comeback when Jerryd Bayless committed a boneheaded foul on Kelly Olynyk with a second left, shoving Olynyk in the back on the inbound. Olynyk sunk both free throws to tie the game.
Then, Khris Middleton got Bayless off the hook.
Middleton drew a foul on Avery Bradley, who was trying to contest the game-winning shot. The Milwaukee wing made one free throw then intentionally missed the second, and Jae Crowder couldn’t replicate this.