Suns 102, Mavericks 91
Goran Dragic recorded 21 points and 13 assists as Phoenix ended their 10-game losing streak.
Shawn Marion had 22 points and nine rebounds while Dirk Nowitzki scored 21 points for Dallas, who fell three games behind the Los Angeles Lakers for eighth place in the Western Conference with four games remaining.
The Lakers face Portland later on Wednesday.
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Heat 103, Wizards 98
Ray Allen scored 23 points off the bench and Rashard Lewis added 17 as Miami set a franchise record with its 62nd victory and clinched home-court advantage throughout the play-offs despite playing without four starters.
LeBron James (hamstring), Dwyane Wade (ankle), Chris Bosh (illness) and Udonis Haslem (ankle) all sat out Wednesday's game.
A.J. Price scored 23 points and John Wall collected 17 points, 11 assists and nine rebounds for the Wizards, who had a nine-game home winning streak snapped.
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Nets 101, Celtics 93
Deron Williams had 29 points and 12 assists as Brooklyn moved closer to locking up the fourth seed in the Eastern Conference.
Brook Lopez scored 21 points and Joe Johnson added 20 as the Nets moved 3-1/2 games ahead of Chicago and Atlanta with four to play in the race for fourth place and home-court advantage in the opening round of the play-offs.
Paul Pierce scored 23 points to lead the Celtics, who maintained a three-game lead for the seventh seed when Milwaukee lost in overtime to Orlando.
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Magic 113, Bucks 103 (OT)
Nikola Vucevic had 30 points and 20 rebounds for his second successive 20-20 outing and Tobias Harris matched a career high with 30 points and grabbed a career-best 19 rebounds as Orlando notched its 14th consecutive home victory over Milwaukee.
The Magic scored the first four points of the extra session and never trailed again to snap a five-game losing skid.
John Henson scored 17 points and posted career highs of 25 rebounds and seven blocks for Milwaukee, who remain three games behind seventh-place Boston in the Eastern Conference play-off race.
Milwaukee lost guard Brandon Jennings to Achilles' tendon soreness early in the game but had a 91-86 lead with 1:20 left.
The Magic kept pushing and forced overtime when a three-pointer by Harris with 1.9 seconds left tied the score 95-95.
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Hawks 124, 76ers 101
Josh Smith collected 28 points and 12 rebounds as Atlanta crushed Philadelphia to snap a three-game slide.
John Jenkins added 21 points off the bench for the Hawks (43-36), who moved into a virtual tie with the idle Chicago Bulls (42-35) for the fifth spot in the Eastern Conference.
Thaddeus Young had 28 points and eight rebounds and Nick Young scored 19 off the bench as the 76ers dropped their third successive game by at least 19 points.
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Pistons 111, Cavaliers 104
Rookie Andre Drummond scored a season-high 29 points and grabbed 11 rebounds as Detroit completed a four-game season sweep of Cleveland.
Greg Monroe added 23 points and eight rebounds as the Pistons beat the Cavaliers for the sixth consecutive time.
Kyrie Irving scored 27 points and Tristan Thompson had 19 and eight rebounds for Cleveland.
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