O.J. Mayo had 20 points, six assists and five rebounds for the Mavericks, who led by 13 early.
The Indiana Pacers stayed within a point of the Central Division lead with an 88-77 win over the Detroit Pistons, with David West scoring 23 points.
The Miami Heat predictably routed the lowly Washington Wizards, with LeBron James notching 23 points and 10 rebounds in the 102-72 win.
The Orlando Magic won 107-98 over Charlotte, handing the Bobcats their 11th straight loss.