‘Depth is a key for the Bills. Beset by injuries last year, they’re in much better position now. With return man Roscoe Parrish on the shelf, look for rookie Leodis McKelvin to step in. He was the best kick returner in this year’s draft. Offensively, the Bills are in steady hands with second-year pro Trent Edwards, who is 8-4 as a starter.’