Durant is expected to miss Game 4 against the Los Angeles Lakers, ESPN’s Shams Charania reported on Sunday.
Durant has a bone bruise in his sprained ankle, which would sideline him two-to-three weeks in-season, Charania added.
The Rockets star has been receiving around-the-clock treatment to play, but has not been cleared by doctors.
“I think there’s some soreness and (he’s) pushed a lot of swelling out, but it’ll be a matter of if he can go. We’ll try it out I’m sure tomorrow morning and before the game, and we’ll know his status then,” Houston coach Ime Udoka told reporters on Saturday.
Durant missed the opener of the series because of a bruised right knee. He returned for Game 2, scoring 23 points in 41 minutes of the 101-94 loss, during which he injured his ankle late.
His injury problems this post-season came after the 37-year-old ranked second in the league in the regular season by playing 2,840 minutes.
–With files from the Associated Press