tackler / runner / official / eligible player at any time / defensive player / No player / same player / tackle / receiver/runner / quarterback / player of either team / helpless runner / same defensive player / defenseless player / obstructing player / second player / prostrate player / single defensive player / conventional tackle / kicking team player / kicker / offensive tackle / Player / head / player of the kicking team / nose tackle / OFFENSIVE PLAYER / non-runner / offensive lineman / airborne player / ROUGHING KICKER / /
Rule 12 Player Conduct Section 1 Blocking, Use of Hands, Arms, and Body LEGAL AND ILLEGAL BLOCK