Combine facts and answer this: Bump and run coverage is a strategy often used by defensive backs in American football in which a defensive player lines up directly in front of a wide receiver and tries to impede him, which formercornerback, five-time Pro Bowler and a 1989 Pro Football Hall of Fame inductee of the Pittsburgh Steelers, specialized in this coverage to such a point as to cause a rule change?
The answer to this question is:
Melvin Cornell Blount