tackler / runner / official / Running forward / defensive player / covering official / Tackle / receiver/runner / Quarterback / player of the receiving team / player of either team / helpless runner / same defensive player / Commissioner / defenseless player / individual player / second player / prostrate player / RT / offensive linemen / Head Coach / kicking team player / conventional tackle / kicker / offensive tackle / leaping player / Player / head / player of the kicking team / nose tackle / OFFENSIVE PLAYER / game official / offensive lineman / /
Rule 12 Player Conduct Section 1 Blocking, Use of Hands and Arms LEGAL AND ILLEGAL BLOCK