Dolphins QB Tua Tagovailoa (rib) exits vs. Bills

Miami Dolphins quarterback Tua Tagovailoa left the field on a cart in the first quarter on Sunday and is questionable to return with a rib injury.

The second-year signal-caller took a hard shot from Buffalo Bills defensive end A.J. Epenesa while attempting to complete a pass on fourth down on Miami's second possession.

The training staff came out to assist Tagovailoa and helped him walk to the sideline, where he was lat