Miami Dolphins quarterback Jay Cutler is believed to have a cracked rib that will force him to miss at least one start, according to a source within The Associated Press.
The source has remained anonymous on the condition that the Dolphins have not commented.
Cutler threw two touchdowns Sunday against the New York Jets before going to the locker room with a chest injury early in the third quarter.
Matt Moore replaced Cutler. The Dolphins went on to conquer the Jets in a 31-28 victory.
Moore is expected to make his first start of the season Thursday at Baltimore.