Mike Tomlin steps away from Steelers: Here's how much the NFL, and the world, have changed since his 2007 hire Mike Tomlin's tenure as Steelers head coach was older than the iPhone. Content Original Link: https://sports.yahoo.com/nfl/article/mike-tomlin-steps-away-from-steelers-heres-how-much-the-nfl-and-the-world-have-changed-since-his-2007-hire-005610107.html