‘Whether it’s through a subtle shift in philosophy or a necessity brought on by the reality of the salary cap, the end result is the same: First-year players are contributing to the Bills’ 7-2 start. That was true against the Dolphins, starting with running back Ray Davis. The team’s fourth-round draft choice out of Kentucky, Davis rushed four times for 20 yards and added two catches for 70 yards, including a 63-yard score in the third quarter that put the Bills up 20-13 after fellow rookie Keon Coleman’s two-point conversion catch.’