Obviously the loss didn't help his case when it comes to potentially winning the award, but Tomlin also made a series of questionable decisions that directly hurt his team's chanc

Ryan Clark defends Mike Tomlin’s fourth-quarter decision against the Browns, while the Steelers face scrutiny over Week 12’s struggles.

Instead of declining the penalty and forcing the Browns to either attempt a go-ahead field goal with 1:55 to play or go for it on fourth-and-2, Tomlin accepted the penalty. It backed up the Browns five yards but gave them another shot at a third down. Cleveland converted the third-and-7 try and scored the game-winning touchdown three plays later.