The more we get to know Chip Kelly, the more we realize how much of his success is rooted in simplicity. Where Andy Reid boasted a playbook that could stretch from floor to ceiling, Kelly seems to believe more in focusing on a smaller amount of plays and perfecting them.

It is about execution, and on offense, it is largely about the men up front.

To get a feel for what Kelly wants out of his offensive line in Philadelphia, it’s best to go back to his Oregon days for clues. The Duck offense was based off the inside zone play. Kelly, in a NIKE Coaches Clinic back in 2009, discussed what he expects out of his offensive line on this play, while giving a glimpse at his overall football philosophy.

We want to get off the ball and be a physical, downhill-running football team. This is not a finesse play. We teach our offensive linemen a play we call the bust block. The idea is to bust their sternums up against their spines on every play. We want to come off the ball, create a double-team, knock the crap out of the defender, and deposit him in the linebacker’s lap.