OKLAHOMA CITY (AP) - The Dallas Mavericks lost Dirk Nowitzki to a knee injury in the second quarter, but beat the Oklahoma City Thunder 103-93 on Monday night for their 17th victory in 18 games.

Nowitzki scored 13 points before leaving with 9:10 left in the second with what the Mavericks said was a sore right knee. Shawn Marion led the effort to replace him, scoring 20 points off the bench.

Dallas improved to 11-1 on the road this season, best in the NBA, and 24-5 overall.

Kevin Durant scored 28 points, one game after a season-high 44 points on Christmas against Denver. James Harden had 18 for the Thunder, who dropped their second in a row to the Mavericks this season.

Mavericks coach Rick Carlisle also missed the game due to a knee injury.

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