Graham wore number 60 for much of his career .
Graham was forced to change it to 14 in 1952 after the NFL passed a rule requiring offensive linemen to wear jersey numbers 50 -- 79 so referees could more easily identify ineligible receivers .
Graham wore number 60 for much of his career , but he was forced to change it to 14 in 1952 after the NFL passed a rule requiring offensive linemen to wear jersey numbers 50 -- 79 so referees could more easily identify ineligible receivers .