Ariza netted nine straight points in the third quarter and the Wizards outscored Boston 22-7 down the stretch to register their third straight win overall.
John Wall contributed 20 points, nine assists and six steals for Washington, which roared back from an 18-point deficit.
Kevin Seraphin, Marcin Gortat and Nene each helped out with 13 points.
Aaron Carter is still in love with Hilary Duff
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