Decision Review System

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The Decision Review System or Umpire Decision Review System (abbreviated as DRS or UDRS ) is a technology-based system that is used in the sport of cricket . It serves the decision-making of the referees and the review of their decisions after an objection by one of the teams.

history

Initially, the system was only used in test cricket to review contentious decisions made by the referees on the field in the event of a dismissal (elimination) of a batsman (batsman). The review system was officially used for the first time by the International Cricket Council in November 2009 in the test match between New Zealand and Pakistan in Dunedin . In the one-day format , it was the first time in January 2011 during the tour of England in Australia applied. In June 2011 the ICC makes the DRS mandatory for all international games except Twenty20 Internationals . However, this practice was later revoked. Both teams involved in a game series currently have to agree on its deployment before the series begins. However, the system will continue to be used in official ICC competitions and further development will be supported by the ICC. Attempts by the ICC to make the system mandatory again for all games failed mainly because of India . In October 2012, the rules of engagement were modified by the ICC.

Components

Apart from the video evidence, the DRS basically consists of three components, whereby the snickometer was not initially taken into account in the decision-making process:

  • Hawk-Eye and Virtual Eye, two competing systems, are ball tracking technologies that show the trajectory of the bowled ball that has been interrupted by the influence of the batsman. This can be used to determine whether the ball would have hit the wicket if it had not been stopped in its trajectory by the batsman's leg protection. This would then lead to a leg before wicket (lbw) decision and the batsman would be eliminated.
  • Hot Spot is an imaging system that works in the infrared spectral range. It indicates whether the ball has even made contact with the bat or the batsman's leg guard. This is relevant for both LBW and Caught decisions.
  • Snickometers are based on directional microphones that detect noise to determine whether the ball has made contact with the bat or the batsman's leg guard. With the introduction of the so-called “Real-Time Snicko”, which for the first time enables data to be processed almost in real time, this technology was also adopted in the DRS.

commitment

In each innings, each team has the right to review referee decisions regarding the elimination of a batsman until they have two unsuccessful appeals (in one-day internationals only one unsuccessful appeal per innings). The teams can only contest decisions to their disadvantage, the field team in the case of "Not Out", the batting team in the case of "Out". The captain of the field team or the batsman who is to go out of the game signals this by forming a "T" with his arms. They each have 15 seconds to do this and can briefly consult with the team or the other batsman. However, if the referees are of the opinion that the objection was initiated by influence from outside the field of play, they may not allow it. As soon as the review has been requested and confirmed by the referee, the third referee (third umpire) examines the game situation in a specially equipped room and also makes voice contact with the respective referee on the field.

Under certain circumstances, the field referees can also call in the third referee themselves (so-called umpire review ), especially in the case of run-outs and stumpings , the so-called line decisions . But also with hit wicket , obstructing the field and in the event of a catch on certain aspects of this rule. In the case of boundaries , in addition to the field referee, the initiative can also come from the third referee himself. Also in those cases in which the batsman is “saved” from being eliminated by a bowler's no ball error.

The inclusion of the third umpire in line decisions with the help of video evidence has existed since 1992, when Sachin Tendulkar became the first batsman to leave the field due to a run-out decision by the third referee. These umpire reviews are used today at all relevant international games, even if the teams cannot agree on the use of the DRS. These then run under the name Third Umpire TV Replay System , since only the video evidence is used here.

Reviews by the teams (so-called player review ) can affect any type of dismissal (except timed out), but only this. For example, whether the catch of a ball was correct or whether a leg before wicket took place. To this end, the third referee notifies the field referees whether his analysis supports the first decision, contradicts it or if he cannot make a decision. The final decision then lies with the field referee: either he shows the signal of the first decision again or signals that he is withdrawing the decision and shows the corrected decision with his arms. Any team can request reviews of decisions as long as they have reached their maximum number of unsuccessful reviews. Under the rules of the DRS, only clearly incorrect decisions are revoked. If the third referee fails to determine this or cannot decide, the first decision by the field referee remains.

See also

Web links

Individual evidence

  1. ^ Official debut for enhanced review system . Cricinfo. November 23, 2009. Retrieved February 9, 2013.
  2. ↑ Referrals to be used in Australia-England ODI series . In: BBC Sport , British Broadcasting Corporation, January 16, 2011. Retrieved February 9, 2013. 
  3. ^ Mandatory for all matches . Retrieved June 29, 2011.
  4. ↑ DRS no longer mandatory, says ICC , Cricinfo. October 11, 2011. Retrieved February 9, 2013. 
  5. ↑ ICC pushes again for DRS, BCCI says no , Cricinfo. June 25, 2012. Retrieved February 9, 2013. 
  6. ^ Amended playing conditions to take effect , Cricinfo. October 29, 2012. Retrieved February 9, 2013. 
  7. ↑ Real Time Snicko Could give DRS the edge , Cricinfo. February 6, 2013. Retrieved February 9, 2013. 
  8. ^ T20 innings' extended, Real-Time Snicko approved , Cricinfo. October 1, 2014. Retrieved November 26, 2014. 
  9. ^ SOUTH AFRICA v INDIA 1992-93 , Cricinfo. Retrieved February 16, 2013.