During Sunday’s loss to the Arizona Cardinals, it was apparent that Tennessee Titans quarterback Marcus Mariota was not right physically. After the game, coach Mike Mularkey confirmed his quarterback was playing through a knee injury. Frankly, it’s hard to figure out why he was kept in the game. If Mariota was playing well despite the injury, it’d be easier to understand. But that was not the case. In fact, Mariota had one of the worst games of his career.