Throw - in - wikipedia Throw - in For boundary throw - in, see Laws of Australian Football. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( May 2009 ) A player taking a correct throw - in during a game. A throw - in is a method of restarting play in a game of football ( or soccer ) when the ball has exited the side of the field of play. Contents 1 Procedure 2 Infringements 3 Historical origins of the throw - in 4 Unusual throw - ins 5 References 6 External links Procedure The throw - in is taken from the point where the ball crossed the touch - line, either on the ground or in the air, though typically a referee will tolerate small discrepancies between the position where the ball crossed the touch - line and the position of the throw - in. The throw - in is taken by the opponents of the player who last touched the ball when it crossed the touch - line. Opposing players may stand at any distance from the thrower but no closer than 2 m ( 2.2 yd ), so long as they are still on the pitch. A player may take a throw - in at a distance further back from the touch - line. At the moment of delivering the ball, the thrower must face the field of play. The thrower must have part of each foot on the touchline or on the ground outside the touchline, and use both hands to deliver the ball from behind and over the head. The ball becomes in play as soon as it enters the field of play and leaves the hands of the thrower. A goal can not be scored directly from a throw - in ; if a player throws the ball directly into their own goal without any other player touching it, the result is a corner kick to the opposing side. Likewise an offensive goal can not be scored directly from a throw in ; the result in this case is a goal kick for the defending team. A player may not be penalised for an offside offence when receiving the ball directly from a throw - in. Skillful attackers can sometimes take advantage of this rule by getting behind the last defender ( s ) to receive the throw - in and having a clear path to goal. The optimal release angle for attaining maximum distance is about 30 degrees above the horizontal, according to researchers at Brunel University. According to the study, players are able to throw the ball with greater release velocity for lower angles. The optimal angle would be 45 degrees if the release velocity did not depend on the angle of throw, if the ball were thrown from ground level instead of above the head, and if there was not air drag. Infringements If an opposing player fails to respect the required distance ( 2 m ) before the ball is in play or otherwise unfairly distracts or impedes the thrower, he or she may receive a caution ( yellow card ) for unsporting behaviour. If the thrower fails to deliver the ball per the required procedure, or delivers it from a point other than where the ball left the field of play, the throw - in is awarded to the opposing team. This is commonly known as a `` foul throw '', though such throws are not considered fouls. It is an infringement for the thrower to touch the ball a second time until it has been touched by another player ; this is punishable by an indirect free kick to the opposing team from where the offence occurred, unless the second touch was also a more serious handling offence, in which case it is punishable by a direct free kick or penalty kick. It is legal to throw the ball into the goal with no contact ; however, a goal will not be scored directly from a throw in, nor can an own - goal, without being touched by a player. The restarts are a goal kick for the defending team and a corner kick for the attacking team, respectively. If any player ( legally ) touches the ball before it goes into the goal, then a goal is scored. A goalkeeper can not handle a ball thrown directly to him or her by a teammate. This can not be circumvented by the keeper using the feet first before handling the ball. If this infringement occurs within the goalkeeper 's penalty area, an indirect free kick is awarded. If the infringement occurs outside the goalkeeper 's penalty area, a direct free kick is awarded. Danielle Carter takes a throw - in for Arsenal Ladies Historical origins of the throw - in The modern throw - in comes from the nineteenth century English public school football games. In these codes of football a variety of methods of returning the ball into play from touch were used. The modern throw - in draws upon various aspects of a number of early English school games. For example, returning the ball by throwing it out was part of the Rugby and Cheltenham football rules. Like the modern throw - in, the direction was not specified. The Sheffield rules instigated the throw - in of the ball at right angles by the opposite side to the one that played it into touch. The two - handed throw - in -- called line - out -- is part of rugby union football. That the first side reaching the ball must throw it out ( at right angles, in this case ) was part of the Football Association rules and the Rossall rules. Unusual throw - ins Rory Delap was highlighted for his throw - in technique : a former schoolboy javelin champion, Delap was renowned for having one of the longest and most powerful throw - ins in football. A Notre Dame Fighting Irish women 's soccer player attempting a flip throw An uncommon but effective technique for delivering a faster than usual throw is the flip throw ( notably employed in recent years by, among others, Estonian player Risto Kallaste ) : in it the player, during the run - up, plants the ball on the ground, flips over it, and uses the momentum gained from the flip to increase the velocity of the ball. References Jump up ^ IFAB, http://www.theifab.com/laws/the-throw-in-2018/chapters/the-throw-in-procedure-2018 Jump up ^ FIFA, https://www.fifa.com/mm/document/affederation/federation/81/42/36/lotg_en.pdf, Laws of the Game, p. 46, July 2008, accessed 13 May 2011 Jump up ^ Association, The Football. `` The website for the English football association, the Emirates FA Cup and the England football team ''. www.thefa.com. Jump up ^ FIFA.com. `` Education & Technical - Referees - Laws of the Game - FIFA.com ''. FIFA.com. Jump up ^ https://www.fifa.com/worldfootball/lawsofthegame/law/newsid=1290867.html Jump up ^ Linthorne, Nicholas P. ; Everett, David J. ( 19 January 2006 ). `` Release angle for attaining maximum distance in the soccer throw - in ''. arXiv : physics / 0601149. Jump up ^ `` Soccer Rules Q&A Search AskTheref.com ''. asktheref.com. Jump up ^ Football : The first hundred years. The untold story. Adrian Harvey. Routledge, Abingdon 2005 page 184 Jump up ^ Arsenal nemesis Rory Delap gives Stoke more than just long throws The Mirror. 3 November 2008. Retrieved 4 November 2008. Jump up ^ Sunday World. p. 115. 2 November 2008. Retrieved 2 November 2008. Jump up ^ `` The Art of the Flip Throw ''. 1 September 2011. External links FIFA Laws of the Game -- Law 15 ) Q&A on Throw Ins ( from AskTheRef.com ) Laws of the Game ( rules of association football ) Terms Law 1 : The Field of Play Law 2 : The Ball Law 3 : The Number of Players Law 4 : The Players ' Equipment Law 5 : The Referee Law 6 : The Other Match Officials Law 7 : The Duration of the Match Law 8 : The Start and Restart of Play Law 9 : The Ball In and Out of Play Law 10 : The Method of Scoring Law 11 : Offside Law 12 : Fouls and Misconduct Law 13 : Free kicks ( direct and indirect ) Law 14 : The Penalty Kick Law 15 : The Throw - In Law 16 : The Goal Kick Law 17 : The Corner Kick Comparisons Football and rugby union Football and futsal IFAB The Football Association Scottish Football Association Football Association of Wales Irish Football Association FIFA Retrieved from `` https://en.wikipedia.org/w/index.php?title=Throw-in&oldid=850396274 '' Categories : Laws of association football Terminology used in multiple sports Association football terminology Australian rules football terminology Basketball terminology Rugby union terminology Hidden categories : Use British English from May 2013 Use dmy dates from May 2013 Articles needing additional references from May 2009 All articles needing additional references Talk Contents About Wikipedia Беларуская ( тарашкевіца ) ‎ Български Català Dansk Deutsch Ελληνικά Español Euskara Français Galego 한국어 Hrvatski Bahasa Indonesia Italiano עברית Latviešu Lietuvių Nederlands 日本 語 Norsk Português Română Русский Simple English Српски / srpski Svenska Türkçe Українська Tiếng Việt 中文 22 more Edit links This page was last edited on 15 July 2018, at 16 : 31 ( UTC ). 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Question: when does a throw in happen in soccer
Answer: when the ball has exited the side of the field of play