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Throwing (cricket)

Types
Fast
Spin
Deliveries
Fast
Spin
Other
Actions
Usual Overarm
Other
Illegal techniques

In the sport of cricket, throwing, commonly referred to as chucking, is an illegal bowling action which occurs when a bowler straightens the bowling arm when delivering the ball. The laws of cricket specify that a bowler's arm must not extend during the bowling action. Only the rotation of the shoulder can be used to impart velocity to the ball. Throws are not allowed. If the umpire deems that the ball has been thrown, he will call a no ball which means the batsman cannot be given out from that delivery. Current regulations of the International Cricket Council (ICC) set the legal limit of 15 degrees of permissible straightening of the elbow joint for all bowlers in international cricket. This law applies between the point at which the bowling arm passes above shoulder height and the point at which the ball is released. The limit is to allow some natural flexing of the elbow joint which happens during the course of legal delivery.

The charge of 'throwing' against a bowler is one of the most serious and controversial that can be made in cricket, as a bowler with an illegal action cannot dismiss a batsman. This means the player cannot effectively participate in the game, and may not be selected again without significant change to the way they bowl.

Law 24, Clause 3 defines a fair delivery with respect to the arm:

A ball is fairly delivered in respect of the arm if, once the bowler's arm has reached the level of the shoulder in the delivery swing, the elbow joint is not straightened partially or completely from that point until the ball has left the hand. This definition shall not debar a bowler from flexing or rotating the wrist in the delivery swing.

Before the advent of developed biomechanical and audiovisual technology, this law was implemented by the on-field umpires, who judged a delivery as illegal or "thrown" on visual judgement alone. The law against throwing has not changed in its essence since overarm bowling was legalised in 1864.

Tom Wills, Australia's most revered cricketer of the mid-19th century, was also its most controversial, and he was often accused of (and admitted to) throwing. Many of his contemporaries recalled his trickery: "[Wills] used to say to the umpire, 'Just look at my feet, will you; I have a bad habit now and then of going over the crease.' The umpire would look at Tom's feet, and Tom would let go a throw for all he was worth." In 1872 he became the first cricketer to be called for throwing in a major Australian match, effectively ending his first-class career.


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