A Big Weight Off Celtics’ Davis

Glen Davis’s weight loss is paying off. Davis’s two-year contract is worth $6 million, but only if he fulfills his part of the bargain in keeping the pounds off. “I really don’t know,’’ Davis said when asked yesterday how much he weighed. “I’ve lost and I’ve leaned out a lot. I’ve lost, I’ve just been working hard. But I can lose as much weight as possible and if I don’t maintain it throughout the season, if I gain 20 pounds by the playoffs, it doesn’t matter.’’