Derrick Rose injured his ankle in the first quarter of Chicago's Game 4 loss at Indiana.

He hurt himself ‘‘just by taking off,’’ Rose said following the game. ‘‘All my weight was on the foot. I really can’t explain it.’’

Rose briefly went into the locker room, but quickly returned to the bench and back to the game. While he was able to play the remainder of the game, Rose lost much of his effectiveness.

‘‘I’m good,’’ Rose said of the sprained ankle.