(Nashville, TN)  --  Former Oregon Ducks and Tennessee Titans rookie quarterback Marcus Mariota is dealing with a sprained MCL in his left knee.  Head coach Ken Whisenhunt says an MRI confirmed the results.  His status for the Titans' game Sunday against the Atlanta Falcons will be determined later in the week.  The 2014 Heisman Trophy winner suffered the injury in the second quarter of Tennessee's loss to Miami this past Sunday.