Manu Ginobili scored eight points in a 19-0 third-quarter rally that sent the San Antonio Spurs past Dallas 88-81 Sunday, but the Mavericks came away worried mostly about the status of reigning league MVP Dirk Nowitzki.

Nowitzki hurt his lower left leg during a nasty spill late in San Antonio's game-breaking stretch. Both the ankle and knee seemed to buckle when he landed after running to block a shot.

Dirk Nowitzki is assisted by the Dallas medical staff after going down hard with a leg injury on Sunday afternoon. Early word says he may be out three weeks.
(L.M. Otero/Associated Press)

He slapped the court and put a hand to his head in agony, then sat motionless for a few minutes.

Nowitzki put no weight on the leg leaving the court, then was seen limping into the X-ray room.

The team said he would be re-evaluated Monday but media reports later Sunday speculated he could be out up to three weeks.

San Antonio actually went ahead on that play, with Tim Duncan grabbing the loose ball and scoring, wiping out what had been a 12-point Dallas lead only minutes before.

Duncan added a free throw, too, and the Spurs were headed to their third straight win since a 1-6 slump.