Ryan Mink
John Harbaugh and Bill Belichick matched wits 12 times on the football field, including two AFC championship games between the Ravens and Patriots.
On Tuesday, they were on the same side, as Belichick accepted Harbaugh's invitation to come to the Under Armour Performance Center as a guest speaker at his annual coaches clinic.
The invite-only clinch includes around 70 coaches from around the
