‘The 25-year-old Greer is one of the lesser-known names on the Bills’ team but he might prove to be the most important backup player on the entire roster, No. 2 quarterback Doug Flutie included. Flutie isn’t going to get on the field much unless Rob Johnson gets hurt. Greer, however, plays more than one third of the defensive snaps, and they’re the most important plays in the game; the third downs, when the opposing offense either keeps its drive alive or is forced to get off the field. Greer enters in all obvious passing situations, whenever the Bills go to five or six defensive backs. "His worth has just skyrocketed," defensive backs coach Bill Bradley said. "The third corner is just about as important as a starting corner."’