Derrick Rose left a game Monday night and didn’t come back.
The Bulls guard missed the second half of his team's 89-84 loss to the Heat with right hamstring and lower back soreness. Rose played 13 minutes in the first half, scoring four points on 2-of-6 shooting, before he was replaced by Aaron Brooks.
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It wasn't clear exactly when Rose's injuries occurred.
The 2011 NBA MVP has missed six games this season, including a three-game stretch earlier this month due knee and back soreness.
The Bulls have now lost three of their last four games, and four straight at home.