The game has changed over the years.
Players are bigger and faster.
Cornerbacks were once fleet-footed mites who couldn't tackle but could run with anyone. Now the ideal corner is a speedy giant who can still run with anyone. Teams are going after bigger, more physical defensive backs to offset potential matchup problems. Jason Sehorn is one of the few corners in the league who has had much success in stopping taller receivers, especially Moss. Sehorn was instrumental in holding Moss to just two catches for 18 yards in the most recent NFC Championship Game.