MILWAUKEE, WI (WHBL) - The Milwaukee Bucks ran out of gas in the fourth quarter Monday night and lost at home to Boston, 102-86. It was the Bucks' 42nd loss - mathematically assuring them of a losing season. The Celtics only shot 40-percent in the first half but still led by three at the break. Boston had a two-point edge going into the final period, when it broke the game open with a 12-4 run. Bucks' point guard Brandon Knight said his team "went flat" in the final 12 minutes, and the Celtics took advantage. Knight led the Bucks with 22 points. Boston coach Brad Stevens said he got on Jeff Green at halftime for passing up an open shot. Green responded by scoring 19 of his 29 points in the second half. Boston out-shot the Bucks 48 to 43 percent, and the Celtics scored 32 points off 21 Milwaukee turnovers. The Bucks also received more bad news on the injury front. Forward-and-center John Henson left the game with a late foot injury. And Bucks' center Larry Sanders will be out at least through this weekend's All-Star break with a fractured orbital bone in his right eye, suffered when he was elbowed by Houston's James Harden on Saturday night. Luke Ridnour and Ekpe Udoh returned Monday night after being out. Caron Butler, Ersan Ilyasova, and O-J Mayo remained out for Milwaukee, which limps into the All-Star break after hosting New Orleans Wednesday night.