1- Emlen Tunnell(1948-1958):
Not only is Emlen Tunnell the greatest cornerbacks in New York Giants history, he is an all time great. Tunnell recored 79 interceptions over his career, 74 coming as a member of the Giants. In his 11 years with New York he never recorded less then 6 picks in one season. Think about that. For more then a decade his lowest season total as a Giant was 6 interceptions. He racked up over 1200 yards returning those 74 picks and brought 4 of them to the house.