The Boston Celtics got down 17 points to Dirk Nowitzki and the Dallas Mavs, only to come back and force overtime. But in the end, the C's lose 118-113.

Nowitzki scored a season-high 31 points for the Mavs. Deron Williams killed the C's in overtime, he finished with 20.

Isaiah Thomas and Marcus Smart scored 20 for the Celtics, Avery Bradley had 19.

The 22-20 C's head to division leader Toronto next on Wednesday night.