Tennessee Titans rookie Marcus Mariota will not play Sunday against Atlanta as he recovers from a sprained MCL in his left knee. Zach Mettenberger will start at quarterback.
Coach Ken Whisenhunt said Friday that Mariota has been ruled out after missing practice all week and the rookie's knee has not quite healed up. Mettenberger practiced as the starter in Mariota's absence.
Mariota sprained the medial collateral ligament in his left knee when hit low by Miami defensive end Olivier Vernon in last weekend's 38-10 loss to the Dolphins.
Mettenberger started six of the seven games he played last season as...