The Mavericks have won seven of their last 10 games in a late-season push to make the playoffs. Dallas trails the Los Angeles Lakers by three games for the eighth and final post-season spot in the Western Conference.
Boston lost its third in a row and has suffered five setbacks in seven outings. Kevin Garnett paced the Celtics with 16 points and 12 rebounds.
Dallas led from start-to-finish after opening the contest on a 9-2 run.
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