The DRS full form is Decision Review System. It is a technology-based system used to review and overturn umpiring decisions on the cricket field. DRS was introduced to reduce the number of incorrect decisions in cricket and provide teams with a fair chance to challenge those decisions.
The DRS system primarily involves the use of ball-tracking technology, known as Hawk-Eye. It is used to determine the path of the ball after it is delivered by the bowler. It also uses various camera angles to assist in making accurate decisions.
History of DRS
The Decision Review System was first introduced in international cricket in 2008 on a trial basis and officially adopted by the ICC in 2009. It made its debut in the Cricket World Cup in 2011. Over the years, the DRS system has evolved, incorporating technologies like Hot Spot, ball-tracking, and UltraEdge to enhance decision-making accuracy. The concept of “Umpire’s Call” for LBW decisions was introduced in 2014, and the rules regarding retained reviews were adjusted in 2016. The DRS has become an integral part of the game, helping teams challenge umpiring decisions and strive for fairer outcomes.
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Rules of DRS
Here’s how the DRS system typically works:
- A specific number of reviews per inning are allocated to each cricket. Usually, they are given two unsuccessful reviews for Test matches and one for limited-overs matches.
- When a cricketer or captain disagrees with an on-field decision made by the umpire, they can request a review. This usually happens when they believe a batsman is not out (LBW or caught behind), a catch has been taken cleanly, or if the decision involves a stumping or run-out.
- Thereafter, the decision is referred to the third umpire. He/she has access to various technology tools, including ball-tracking, Hot Spot (infrared imaging to detect contact between the ball and bat), and Snickometer (audio detection of edges).
- The third umpire reviews the footage and makes a decision based on the evidence provided by the technology. They communicate their decision to the on-field umpire via a wireless communication system.
- Then, the team retains the review if the review is successful and the on-field decision is overturned. However, if the review is unsuccessful, and the on-field decision stands, the team loses their review for that innings.
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