(Dallas, TX) -- Dirk Nowitzki scored 40 points as the Mavericks downed the Blazers, 132-120, in overtime in Dallas. Deron Williams added 31 points and 16 assists for Dallas, which opened OT on an 11-0 run. Damian Lillard led Portland with 26 points. Mason Plumlee finished with 14 points and 19 rebounds in the loss. Dallas moved to a half-game behind the Blazers for the sixth-seed in the Western Conference playoff race.