Chip Kelly's offense with the Philadelphia Eagles isn't unique because of specific schemes but how he organizes and implements them.

“I’ve said it since day one: We don’t do anything revolutionary offensively,” Kelly said recently. “We run inside zone, we run outside zone, we run a sweep play, we run a power play. We’ve got a five-step [passing] game, we’ve got a three-step game, we run some screens. We’re not doing anything that’s never been done before in football.”

Kelly is described by Bill Barnwell as a "football hacker", attacking the very logic of defenses by deploying two-on-one, three-on-two and four-on-three advantages.

The Eagles led the NFL in plays of more than 20 yards last season for this very reason.