Thunder guard Reggie Jackson was forced to leave the floor early in Game 4 against the Spurs with a right ankle sprain and his return is questionable.
Jackson appeared to turn his ankle (watch here via @kococarson) on a drive in the first quarter and exited at the 8:25 mark. Jackson did return to the bench after going to the locker room.
Jackson was inserted into the starting lineup for Game 3 by Thunder coach Scott Brooks and it paid dividends, with Jackson scoring 15 points in the Thunder's 106-97 win Sunday against the Spurs. He exited Game 4 after playing just four minutes.
UPDATE: Jackson started the second quarter for the Thunder with a noticable limp, and almost immediately checked out and returned to the locker room. See this story on twitter.com