Scully played college football for the Notre Dame Fighting Irish, earning unanimous All-American honors in 1980.
In his ten-year NFL career, he played in 112 games and started eighty-two of them.
In 1989, John played piano and sung Bruce Springsteen's Meeting Across The River, a rather obscure track off the Born To Run album, in a Super Bowl XXIII NFL players Talent Showcase.
The event was telecast live on national television prior to game (where San Francisco beat Cincinnati, 20–16).
This biographical article relating to an American football offensive lineman born in the 1950s is a stub.