Virtually EVERY NFL guy is on the stuff. The biggest joke in this whole thing is the NFL coming out with their 'holier than thou' proclamations about their steroid testing. Every year they pick one insignificant player to be the sacrificial lamb for p.r. purposes and they suspend this guy to show how tough they are on steroid enforcement. The whole league collapses and they start over if steroids are ever dissallowed in the NFL. Baseball has a problem with 'roids, no doubt about it. But the NFL is a complete joke and completely phony on this subject.
Also, Marion Jones didn't put on incredible amounts of mass, just some. But Payton and others were really 'cut' and that muscle definition doesn't just come naturally.