
Mike Tomlin's years-long rivalry with John Harbaugh was as epic as it was historic, with the AFC North duo battling it out a total of 40 times as the two longest-tenured active coaches in the NFL—that is, until Harbaugh was let go by the Ravens this week.
Harbaugh's exit from Baltimore was by far the biggest surprise of the NFL coaching cycle so far, though it arguably wasn't without reasonable cause. The Ravens had just lost their playoff spot to the Steelers following Week 18's season-ending defeat and were looking back at yet another lost campaign in Lamar Jackson's prime.