There are a lot of rules and definitions for blocking, depending on the player who is blocking, whether it is in the free blocking zone, whether the player is on the line of scrimmage or not, whether the player is on offense or defense.
The NFL rules are not publicly available, so getting specific answers may be difficult. I can give you NCAA rules, but I need a more specific answer so I don't have to type 8 pages on the various blocking rules for various positions, etc...
"No player on offense may assist a runner except by blocking for him." -From NFL rules digest.
Crab Blocking is legal in the free blocking zone at any level. Blocking below the waist is legal in college and NFL football.
Hines Ward
No, cut blocks are legal in the NFL as long as they are done within the rules of the game. Cut blocks refer to blocking technique where an offensive player goes low to cut down a defender below the waist. It is allowed as long as it is not deemed unnecessary or dangerous by the officials.
See Web Links for NFL Rule book
no
google, nfl network
illegal.
Pfft... Hines Ward. What a dumb question...
Facebook blocks accounts when you break their rules. Stop breaking their rules and they'll stop blocking you.
Rules changes are made by the NFL Competition Committee, which has eight members made up of coaches and/or managers or various teams in the league.
Pop Warner rules are the same as high school. CUT blocking is allowed in the FREE BLOCKING ZONE. A CUT block is a 1 on 1 block between and blocker and defender below the waist. A CHOP block is illegal. This is a block that is a HI/LO situation where it is 2 on 1.