Tennessee Titans quarterback Blaine Gabbert is being evaluated for a concussion following an illegal helmet-to-helmet hit from Jacksonville’s Malik Jackson.
Gabbert was playing in place of injured starter Marcus Mariota, who was then subbed into the game once it became clear Gabbert needed medical attention.
The flag on the play was due to Jackson lowering the head to initiate contact. It was an automatic 15-yard penalty, but came at a cost to the Titans, who were relying on Gabbert to steal a victory in Jacksonville.