Armed with new running back LeSean McCoy and a below-average NFL quarterback in either Matt Cassel, Tyrod Taylor, or EJ Manuel, the Buffalo Bills plan on running the ball heavily in 2015.

"We'll have probably the biggest playbook in the history of man in our running game," Ryan said on Wednesday via, which we took from "Why? Because it's important to us. We want to be multiple in the running game, and that's what (offensive coordinator Greg Roman) does. He's as multiple as ... like some people are in the passing game, we can be that way in the running game as well."

Greg Roman had success running the ball during his tenure in San Francisco when Frank Gore was in the backfield.

McCoy is know more as a lateral runner, rather than a north-and-south runner, so it will be interesting how he fares in Buffalo.

He had 1,300 yards last season for the Eagles on the ground, while adding more than 150 as a receiver.

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