To everyone in the PhiladelphiaEagles organization, locker room, and fan base, they were known as the core four: Brandon Graham, Jason Kelce, Fletcher Cox, and Lane Johnson. These were four long-time veterans who had been around forever and played their entire careers in Philly.
These are legends. Each one is the author of a unique story. Tales about these guys could take hours to tell. Jason, Fletch, and B.G. are the only Birds who played for Andy Reid, Chip Kelly, Doug Pederson, and Nick Sirianni. Lane joined the nest during Chip's coaching era.
Graham, the first player Howie Roseman drafted, finally called it a career after 15 seasons and a second Super Bowl win, leaving Johnson as the lone remaining Core Four member.