Memphis led for much of the game and was still out front by a point with 9:18 to play but Dallas closed the contest on a 23-12 run. Marion scored 12 of his 16 points in the final period.
The defending champion Mavericks began the night in sixth place in the Western Conference, with only two games separating No. 6 through No. 9 in the playoff race. The victory moved Dallas into a tie for fifth with Memphis.
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