Buffalo (6-10): There shouldn’t be much dropoff, even if CB Antoine Winfield somehow escapes in free agency, from the defense that catapulted all the way to No. 2 in the league in 2003. The big task for rookie coach Mike Mularkey, the inventive offensive schemer, is to rehabilitate the career of QB Drew Bledsoe, whose numbers fell off precipitously last season. Buffalo could use another outside playmaker, but Mularkey and his staff figure to upgrade the performances of younger veterans like RB Travis Henry and WR Josh Reed. The OL needs a fix but veteran mentor Jim McNally has worked wonders with even less talent than is on hand here. Obviously, the Bills are in a difficult division, one that includes the reigning league champions, and will need more offense to compete.