‘The challenge he’s facing now is different than chasing future Heisman Trophy winners or lowering his forearm on some unsuspecting wideout who dared stray between the hash marks. Gray is in his first season as the defensive coordinator of the Buffalo Bills, a position that places him under an intense spotlight that can be tough to bear. He knew there were going to be doubters when the Bills abandoned the 3-4 defense they had used successfully since 1979 in favor of the 4-3. He knew some people were going to ask questions about the change, especially after the Bills had the third-ranked defense last year following a season in which they were ranked No. 1. Molding the unit in his resilient image is even more daunting minus steadfast veterans like Marcellus Wiley, Ted Washington, John Holecek and Sam Rogers. Now Sam Cowart, the pulse of the group, is down for the year with a partially torn right Achilles tendon.’