John Madden has a history in the NFL.
He now has established himself in the history of video games.
Every year, a new game is made.
Every year, another player gets the cover.
Every year, that player has been cursed.
The "Madden curse" affects players either during the season in which they were portrayed on the Madden cover or, rarely, the one after it.
You may see this as a "superstition." Well, read on...