number 1 of all time and nobody else is even close, the man who used to bite people in pile ups
Conrad Dobler (offensive lineman -- St. Louis Cardinals, New Orleans Saints and Buffalo Bills, 1972-1981)
Once made SI's cover as the dirtiest player in pro football. "I see defensive linemen jump to knock a pass down," he said after he retired. "When that happened near me, I'd smack 'em in the solar plexus, and that got their hands down real quick. It's as if nobody wants to see anybody else get injured." Dobler didn't care who got hurt. He punched Mean Joe Greene, he kicked Merlin Olsen in the head, he bit, he gouged, and once, he spit on a downed and injured opponent, the Eagles' Bill Bradley