Josh Giddey left the Chicago Bulls' 121-103 win over the Indiana Pacers in the fourth quarter due to a sprained right ankle.
It is the same ankle that Giddey, who had 29 points and 10 rebounds, injured in the Olympics last summer.
Billy Donovan said that the Bulls wouldn't know the extent of the injury for a couple days.
"This one you could just tell, it was pretty painful the way he came up. So, obviously I'm concerned, but I just don't know to what degree it is," said Donovan after the game.
Via ESPN