I think the best corner back in football is Charles Woodson. He can cover and he can catch and return. He forces fumbles and brings down ball carriers easily. Darrelle Revis is close second, but I have to consider his small amount of interceptions and his small stature. Dominique Rogers-Cromartie is young and very good. He is in my top 5. He and Bryant McFadden plus safety Adrian Wilson are the best secondary in football. But best cornerback of all time is Dick "Night Train" Lane. 14 interceptions in his rookie season. And he got better and better. He was unbeatable. Imagine how many interceptions he would have gotten during the west coast offense time. He defended back when running the ball was happening almost every play.