And the Mavericks just kept rolling on the road.
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.
Nowitzki, who said after the game that he was day-to-day, will have an MRI exam on his right knee Tuesday morning. X-rays on his right knee were negative.
"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.
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.
"We just picked a bad time to miss shots," Brooks said. "They did a good job of making shots in the fourth quarter."
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.