The Facts: Titans quarterback Marcus Mariota exits Sunday's game against the Dolphins with an elbow injury.

Diehards Line:Mariota took a hit in the third quarter of Sunday's game and was unable to get back on the field. At this time, the severity of the injury is not known, but the fact that he was unable to return is not a good sign. Blaine Gabbert will step in as the signal caller for the Titans with Mariota on the sidelines. Mariota finished the day with 103 passing yards and two picks.