Video: NFL rookies visit Hall of Fame

As proposed by Michael Irvin, all NFL rookies this year were required to visit the Pro Football Hall of Fame in Canton, Ohio, to get a glimpse of football's past -- and what their future might hold.

And, as ESPN's Bob Holtzman reports, the likes of Andrew Luck, Robert Griffin III, Ryan Tannehill and Brandon Weeden were impressed with what they saw from the HOF and VP of player engagement/former NFL player Troy Vincent.