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The history of the world describes the history of humanity as determined by the study of archaeological and written records. Ancient recorded history begins with the invention of writing. However, the roots of civilization reach back to the earliest introduction of primitive technology and culture.





American football
American football | Stories Preschool

Chop block


In gridiron football, a chop block is an attempt by an offensive player to cut block (block at the thigh level or lower) a defensive player. In the National Football League (NFL), a chop block was considered legal on running plays when (i) the blockers were aligned next to each other on the line of scrimmage, (ii) the blockers were lined up anywhere on the line and the flow of the play is towards the block or (iii) the cut blocker was aligned in the backfield and the chop block took place outside the original tight end position. The cut blocker is said to "chop" the defender and usually engages simultaneously with or immediately after the high block. A "reverse chop" occurs when the high block comes immediately after the low block and the same rules apply. On March 22, during the 2016 NFL Owner's meeting, all chop blocks were eliminated, and are now considered an illegal move with a 15-yard penalty.

In the NFL, college and high school football, the penalty for an illegal chop block is 15 yards. They were first banned in the NCAA in 1980. Chop blocks are illegal in the NFL on passing and kicking plays, as well on any play with attempted pass blocking or kick protection but which are actually running plays. It is also an illegal chop block if a player "lures" a defender by "pass-blocking posture" while another player chops him. The continued legality of chop blocking, as of all low blocks, is controversial. Partisans of the offensive line see it as a traditional run blocking technique, while those of the defensive line see it as unnecessarily dangerous.

In the Canadian Football League (CFL), chop blocking is defined as cut blocking a player already engaged, physically or otherwise, with another blocker. It is always illegal and carries a 15-yard penalty.

SPORTS

 

American football - Stories Preschool American football - Stories Preschool American football - Stories Preschool

American Football

Game play in American football consists of a series of downs, individual plays of short duration, outside of which the ball is dead or not in play. These can be plays from scrimmage – passes, runs, punts, or field goal attempts (from either a place kick or a drop kick) – or free kicks such as kickoffs and fair catch kicks. Substitutions can be made between downs, which allows for a great deal of specialization as coaches choose the players best suited for each particular situation. During a play, each team should have no more than 11 players on the field, and each of them has specific tasks assigned for that specific play.

Rules and gameplay


Positions

Offensive (Interior) line
Backs and receivers

Defensive line
Linebackers
Defensive backs

Special teams


American football - Stories Preschool

 



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