Mike Rodak ESPN Staff Writer
The Bills have hired John Blake to replace Karl Dunbar, fired Sunday, as their defensive line coach. Blake, who was hired last month at Lamar University, resigned from North Carolina amid an NCAA investigation into his financial relationship with then-NFL agent Gary Wichard. "He endured a difficult time in his coaching career a few years back, but has moved forward with his life and put that behind him," Rex Ryan said of Blake in a statement. "Since that time he has worked with a number of NFL players and earned their respect with his ability to hone their skills and techniques." Ryan coached under Blake at Oklahoma in 1998.