The Celtics, trailing 110-108, regained possession following a pair of missed Dwayne Wade free throws. Wade was whistled for a violation on the second free throw, turning the ball over with 0.6 seconds remaining.
“It was drawn up for a 2, but I told Gerald I wanted to go for the 3 to win it,” said Green.
James led all scorers with 25 points, but it was Green matching him every step of the way. He racked up 24 points of his own and shot an astounding 5 of 8 from beyond the arc. Avery Bradley added 17 points and Jordan Crawford notched 15 points.
Boston has now won three straight contests. They will return home Monday for a matchup against the Orlando Magic.