Marcus Smart sprained his right ankle in the 4th quarter of the Boston Celtics' 99-85 win over the Phoenix Suns.
Smart will be re-evaluated on Tuesday.
Smart said he should be available for the rest of the Celtics road trip.
"It just irritated the exact same ankle I was coming back from in the same spot. But everything's fine. I should be fine to play the rest of the trip," said Smart.