Mariota likely has an ulnar nerve (funny bone) injury. Nerve responsible for ring and pinky finger. Not a pain issue but weakness/numbness in those fingers & unlikely to throw well. Still can hand the ball off and run it himself. #TitanUp #TENvsJAC Likely 1-2 weeks to calm nerve.

— Randon Hall, MD (@theinjurysource) September 16, 2018