LeSean McCoy and Trent Cole had a scuffle during training camp on Sunday.

McCoy and Cole are good friends.

"Next thing you know, they're on the ground scuffling," linebacker Brandon Graham said. "It was just a friendly thing, you know. They're always competing and talking stuff to each other. It was just one of those things."

The offensive players feel a responsibility to let the defense know when they've gone too far in being physical.

"The whole camp so far, they've just been touching just a little too much," McCoy said. "I'm trying to let them know 'it's OK, you can' t cover me.' We'll go in the locker room area and talk it out, joke it out. It's one thing when you don't know a guy and he's trying to win a job. That's actually one of my good friends."