We heard it from readers last week when we left the Buffalo Bills off our list of teams planning for major changes on defense. The Bills, indeed,, will resemble a new creation under coordinator Mike Pettine,, who plans to unleash a flexible defense that slips between the 3-4 and 4-3 from snap to snap. Instant Debate: The pressure is on ... Which rookie faces the most daunting spotlight in 2013? Our analysts debate,Adidas ZX Flux Print trainer, with
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