NASHVILLE, Tenn. (AP) — Tennessee quarterback Marcus Mariota is day to day after an MRI exam showed a strain of his hamstring. Coach Mike Mularkey says they will not play him against Miami if there's any chance of further damage. Mularkey updated Mariota's status Monday, saying the Titans (2-2) want to be smart with their quarterback. Mariota, who ran for two touchdowns, aggravated his hamstring in the first half of the Titans' 57-14 loss to the Texans .