Steelers head coach Mike Tomlin steps down after 19-year run Chris Bumbaca and Prince Grimes react to Mike Tomlin’s 19-season tenure as Steelers head coach coming to an end. A late and unexpected vacancy has spun the NFL's offseason coaching carousel into overdrive. Mike Tomlin is stepping down from the Pittsburgh Steelers after a 19-year run leading the storied organization, the team announced Tuesday. Steelers president Art Rooney II said in a statement that Tomlin informed him of the decision on Tuesday morning. "Obviously, I am extremely grateful to Mike for all the hard work, dedication and success we have shared over the last 19 years," Rooney said....