Ja Morant has been diagnosed with a bone bruise and is considered doubtful for the remainder of the playoffs.
Morant underwent an MRI on Sunday but didn't disclose the injury until after Game 4. The Memphis Grizzlies have contended that Morant suffered the injury when Jordan Poole inadvertently grabbed his right knee.
The Grizzlies face a potential elimination in Game 5 against the Golden State Warriors.
Memphis lost 101-98 to the Warriors on Game 4 without Morant.