The Celtics ended a two-game skid and, despite an 11-14 record, maintained their lead in the Atlantic Division. New York had won three of its previous five games to account for half its victory total this season.
New York owned a narrow lead for most of the second half until Bradley's 3-pointer gave the Celtics an 86-84 advantage.
A layup by Vitor Faverani and a jumper by Jeff Green gave Boston enough points to win for the seventh time in 11 games.
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