The Buffalo Bills look like they’ve positioned themselves well to avoid the doomsday scenario that struck in the defensive backfield a season ago. When cornerback Stephon Gilmore suffered a broken wrist during the 2013 preseason, the secondary suffered. Things got even worse in Week Three, when Ron Brooks missed a game against the New York Jets with a foot injury and Leodis McKelvin went out early with a hamstring strain. That put Justin Rogers in the spotlight – with disastrous results. Rogers was torched for more than 250 receiving yards and two touchdowns as the Bills lost an important early-season AFC East game. Perhaps with those memories still in their minds, the Bills have constructed a roster deep at cornerback this year. Buffalo native Corey Graham was added to the mix as a free agent, while the team also selected Ross Cockrell out of Duke in the fourth round of May’s NFL Draft. They join holdovers Gilmore, McKelvin, Brooks and Nickell Robey to give the Bills a strong top six at the position.