Ginobili said his leg began tightening late in the game, in which he logged a season-high 32 minutes. He took himself out for the Spurs’ final defensive possession, which ended when Mike Conley missed a 29-footer.
Ginobili indicated he might consider sitting out as a precaution against further injury, but otherwise appeared unconcerned.
“I don’t care about missing one game,” Ginobili said. “I don’t want to push it and miss a month.”
So it doesn't sound like its too serious but it also sounds like he's going to sit out tonight against Dallas.