New Zealand NBA rookie Steven Adams sprained his right ankle in Oklahoma City Thunder's 116-100 win over the Memphis Grizzlies.
The centre landed awkwardly on a rebound attempt in the second half and was clearly in pain as play was stopped.
Adams had to be helped to the locker room and did not return to the game.
The Thunder confirmed a right ankle sprain but the recovery time is unknown.
Adams had scored three points to go with five rebounds and a steal in 16 minutes on court before the injury.
The win in Memphis lifted the Thunder to a 17-4 record.
They were led by point guard Russell Westbrook's 27 points and nine assists.
- Fairfax Media
What did you make of the Tall Blacks' World Cup campaign?