Serge Ibaka had 21 points and a career-high 22 rebounds and reserve guard Anthony Morrow added 16 points for the Thunder, which won for the sixth time in seven games. The Thunder moved into a tie with Phoenix for eighth place in the Western Conference.
The Thunder rolled, despite getting just 12 points from Kevin Durant.
Dirk Nowitzki had 14 points and Tyson Chandler added 10 points and 13 rebounds for the Mavericks, who shot a season-low 36.3% from the field. Dallas point guard Rajon Rondo returned after missing six games with broken bones in his face. He finished with five points and six assists in 30 minutes.
Amare Stoudemire didn't play for Dallas and probably won't make his debut with the Mavericks until Sunday.