The Boston Celtics stepped up their run to the playoffs on Tuesday by upsetting Miami 115-107 for their second victory over the Heat in 10 days.

Paul Pierce scored a team-high 27 points and Rajon Rondo had 18 points and 15 assists, as the Celtics (33-24) earned a banner road win to lie just two games out of the third spot in the Eastern Conference.

LeBron James tallied 36 points, seven rebounds and seven assists for Miami, while Dwyane Wade scored 20 but the Heat (40-16) slipped 2.5 games behind top seed Chicago after suffering their second home loss in three games.

Miami had previously enjoyed a 17-game winning streak on their home floor.

The Heat, dominated in a 19-point loss to the Celtics last week, fell behind by 11 after the first quarter.

(Writing by Jahmal Corner in Los Angeles; Editing by Ian Ransom)