BOSTON (AP) — Carmelo Anthony scored 21 points and the New York Knicks held on after blowing most of a 26-point lead to beat the Boston Celtics 88-80 in Game 6 on Friday night and advance in the postseason for the first time since 2000.

Iman Shumpert scored 15 of his 17 points in the second half, when the Celtics cut a 75-49 deficit to four points. But Anthony made a jumper to give New York an 81-75 lead and then sank a 3-pointer, then J.R. Smith converted a three-point play to restore the double-digit lead the Knicks had nursed most of the game.

Jeff Green scored 21 points for the Celtics, who had rallied from a 3-0 deficit in the series and had a chance, at home, to force a decisive seventh game.