Rugby tackle

Most forms of football have a move known as a tackle. The primary and important purposes of tackling are to dispossess an opponent of the ball, to stop the player from gaining ground towards goal or to stop them from carrying out what they intend.

The word is used in some contact variations of football to describe the act of physically holding or wrestling a player to the ground. In others, it simply describes one or more methods of contesting for possession of the ball. It can therefore be used as both a defensive or attacking move.

In Middle Dutch, the verb tacken meant to grab or to handle. By the 14th century, this had come to be used for the equipment used for fishing, referring to the rod and reel, etc., and also for that used in sailing, referring to rigging, equipment, or gear used on ships. By the 18th century, a similar use was applied to harnesses or equipment used with horses. Modern use in football comes from the earlier sport of rugby, where the word was used in the 19th century.

In American football and Canadian football, to tackle is to physically interfere with the forward progress of a player in possession of the ball, such that his forward progress ceases and is not resumed, or such that he is caused to touch some part of his body to the ground other than his feet or hands, or such that he is forced to go out of bounds. In any such case, the ball becomes dead, the down is over, and play ceases until the beginning of the next play.

A tackle is known as a quarterback sack when the quarterback is tackled behind the line of scrimmage while attempting to throw a pass. A tackle for loss indicates a tackle that causes a loss of yardage for the opposing running back or wide receiver. This happens when the quarterback is sacked, when either a rusher or a receiver is tackled behind the line of scrimmage, or when the ball is fumbled behind the line of scrimmage and was picked up by an offensive player who does not manage to move past the line before being tackled. When a player who does not have the ball is taken down, it is generally referred to as a block.

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