Alonzo Adams / AP

Dallas Mavericks forward Dirk Nowitzki falls after landing awkwardly during the first half of Monday's game against the Oklahoma City Thunder.

updated 10:42 p.m. ET Dec. 27, 2010

OKLAHOMA CITY - The Dallas Mavericks were already without their coach after knee surgery, then lost Dirk Nowitzki to his own knee injury.

And the Mavericks just kept rolling on the road.

Caron Butler scored 21 points and the Mavericks shook off the loss of Nowitzki in the second quarter to 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 scored 20 points off the bench to help replace him.

"You hate to see the big German go down," guard Jason Terry said. "But we saw him at halftime and he was smiling. He told us, 'No problem. You guys got this.'"

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

"Just a great team win," said Mavs assistant Dwane Casey, running the team while Rick Carlisle recovers from his surgery. "Huge team win. The guys pulled together. We had to get into a rhythm offensively. It took us awhile to find it. This should be a huge confidence boost for our guys."

Casey said he didn't believe Nowitzki's injury was serious.

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.

Thunder coach Scott Brooks said his team's approach did not change after Nowitzki's injury.

"I knew this team was a defensive team. They have the record of 24-5 because they have a talented group of guys that play well," he said. "Dirk is one of the best players, but he isn't the only guy on their team."

Terry was 5 of 8 from the floor in the fourth quarter and scored 11 of his 13 points in the final period. The Mavs held Durant to just five points in the final period.

The Thunder led 84-83 with 9 minutes left but Dallas scored the next seven points.

Mike Ehrmann / Getty Images The Week in Sports Pictures The nation grieved for those hurt, killed and affected by the Boston Marathon bombings. After one of the suspects was caught on Friday — following a day-long lockdown and manhunt — sports returned to Boston over the weekend.

"We just picked a bad time to miss shots," Brooks said. "They did a good job of making shots in the fourth quarter."

DeShawn Stevenson had 12 points for the Mavericks. Jason Kidd finished with 10 points, 10 assists and nine rebounds.

Notes: Oklahoma City was just 4 of 18 shooting in the fourth quarter. Dallas was 11 of 20. ... Dallas is 15-1 this season when two of its bench players score 10 or more points.

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