The Giants employed six linemen, one linebacker and four defensive backs. In obvious passing situations, the two ends also dropped into coverage. The four backs covered the deep areas while the ends and linebackers covered the shallow areas. The Browns scored 297 points in their other 10 games. Cornerbacks are generally the best athletes on the team because they are expected to run backward and then turn to keep up with fast receivers.
Safeties are usually the bigger defensive backs.
They must function in a support role against the run and also cover tight ends. They mix it up well and they are good at it and play each coverage very well. Favre has been impressed with New England's cornerbacks, Otis Smith and Ty Law, and safeties, Lawyer Milloy and William Clay. I like what I see of those guys. They challenge you and don't get intimidated.