Mike Vrabel promised to develop franchise quarterback Marcus Mariota during his introductory press conference as the head coach of the Tennessee Titans.

"There's ways to win games in this league without a franchise quarterback," Vrabel said. "We got one, we're going to develop him. So I don't think that that's a critical factor. I think what it is is that it has to be the right fit."

Vrabel comes to the Titans after serving as the defensive coordinator of the Houston Texans.

"I believe in screens, I believe in play-action -- things that he does well. ... He's averaging 17 or 18 yards a completion in play-action. Those things scare you as a defensive coordinator, those are big plays that change field position. Those are things we believe in, but we're going to run the football and do it a few different ways," he said of Mariota.

"We never want to put him in harm's way. We don't want to sit there and run him for the sake of running him. But we want to make sure people know he's back there."