The Umpire Decision Review System (abbreviated as UDRS or DRS) is a technology-based system used in Cricket
The system was first introduced in Tet Cricket for the sole purpose of reviewing controversial decisions made by the on-field Umpires in the case of a Batsman being dismissed or not.
The new review system was officially launched by the ICC on Nov 24,2009 during the first Test match between New Zealand and Pakistan at the University Oval in Denedin
DRS was first used in ODI's in January 2011, during England's Tour of Australia
The ICC had made the UDRS mandatory in all international matches but it later decided to end the mandatory use of DRS and now it will be up to both the teams to mutually agree on DRS use
There are basically three components in UDRS -
The system was first introduced in Tet Cricket for the sole purpose of reviewing controversial decisions made by the on-field Umpires in the case of a Batsman being dismissed or not.
The new review system was officially launched by the ICC on Nov 24,2009 during the first Test match between New Zealand and Pakistan at the University Oval in Denedin
DRS was first used in ODI's in January 2011, during England's Tour of Australia
The ICC had made the UDRS mandatory in all international matches but it later decided to end the mandatory use of DRS and now it will be up to both the teams to mutually agree on DRS use
There are basically three components in UDRS -
- Hawk-Eye, Eagle Eye, or Virtual Eye: ball-tracking technology that plots the trajectory of a bowling delivery that has been interrupted by the batsman, often by the pad, and can determine whether it would have hit the wicket or not.
- Hot Spot: Infra-red imaging system that illuminates where the ball has been in contact with bat or pad.
- Snickometer:which relies on directional microphones to detect small sounds made as the ball hits the bat or pad.
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