Kevin Durant left the Brooklyn Nets game against the Miami Heat in the first quarter due to a thigh contusion.
Durant will be re-evaluated on Monday.
"He's sore. But we don't know how severe. We'll see tomorrow how he wakes up and go from there," said Steve Nash.
Nash added that he wasn't sure whether Durant would continue with the team on their road trip.
Durant had eight points in four minutes before he left.