Oklahoma City guard Hamidou Diallo was stretchered off with a leg injury during the Thunder's 123-95 win over Golden State Warriors.
Diallo was attempting to rebound a failed fourth-quarter layup attempt by Warriors forward Jonas Jerebko when their legs got tangled.
The 20-year-old remained on the court in pain as his team-mates pushed the ball upcourt, but the referees soon stopped play so he could receive treatment.
Diallo held his hands over his head as he was wheeled off the floor and afterwards Thunder coach Billy Donovan said the only update was that he had been sent for X-rays.
Diallo scored three points and grabbed six rebounds during his 17 minutes of action on Wednesday.
A second-round pick in this year's draft out of Kentucky, Diallo is averaging 6.3 points and 2.8 rebounds in 14.6 minutes per game for Oklahoma City.