Dan Marino is both proud and a bit surprised that his single-season passing yardage record has stood the formidable tests of time and rules changes. He doesn't expect it to last much longer. The former Miami Dolphins QB set the record of 5,084 yards in 1984, but if the league's quarterbacks continue at their current pace this season, New England's Tom Brady, New Orleans' Drew Brees, Green Bay's Aaron Rodgers, Dallas' Tony Romo and Carolina rookie Cam Newton all would surpass his total, and San Diego's Philip Rivers and Detroit's Matthew Stafford would be knocking on the door. Marino, now a CBS Sports studio analyst, says the game has changed. The rules limit contact by defensive players and severely penalize many of the bone-jarring hits that made the safeties and linebackers of his era famous. Tight ends and running backs are more versatile, the no-huddle offense is more common, teams throw more than ever and receivers are bigger, stronger and faster. "I don't want anybody to break it," the Hall-of-Fame quarterback said, laughing. "There's a lot of guys that are going to have a chance to break it, I'm sure." Source: ESPN
It won't happen all these bad defense around the league will catch up and you'll see passing yards will go down..