After trailing by as many as 12 in the fourth quarter, the Celtics mounted a late comeback behind Eddie House, who scored 16 in the quarter and led all scorers with 27 points.
House's 3-pointer with 45 seconds left cut the Knicks' lead to 101-97. Mardy Collins' free throw gave the Knicks a 102-97 lead just before Patrick Ewing Jr. stole an errant pass by Boston's Gabe Pruitt and hit two free throws to close out the game.
The first half featured 15 lead changes as the teams played to a 56-56 tie at the half, but the Knicks (2-2) broke the game open in the third quarter, outscoring the Celtics 28-20. New York's Chris Duhon broke a 66-66 tie with a 3-pointer, sparking a 13-2 run.
The Celtics cut the deficit to single digits to end the quarter before Robinson hit two quick 3's in the fourth to help the Knicks take a 92-80 lead.
House scored five straight points to cut the lead to 96-89, but Ewing Jr.'s dunk off an offensive rebound with 3:27 left extended the Knicks' lead back to 98-89.
Robinson was 3-for-6 from behind the arc. Stephon Marbury had 12 points for the Knicks while Duhon and Collins each had 10.
Paul Pierce scored 15 points for the Celtics and Kevin Garnett and Tony Allen each had 11.
Notes: After sitting out Thursday night's game against New Jersey, Ray Allen, Garnett and Pierce were back in the Celtics' starting lineup. ... Celtics G Rajon Rondo left after spraining his right ankle in the third quarter and did not return.
