Two down, one to go for the Celtics in this back-to-back-to-back. The amazing Kevin Garnett (21 & 12) led all scorers and Brandon Bass (18 & 11) played well again — his third double-double in four games — despite a sore knee that could use some rest. Though Deron Williams had 12 points and 14 assists in the losing cause, Kris Humphries was held to 6 PTS and 10 REB by the Boston big men. Nets rookie PF-C Jerome Williams had 12