History
The third umpire was the brainchild of Dr Ali Bacher, the former Managing Director of the United Cricket Board of South Africa and Mike Demaine, the senior cricket producer at the South African Broadcasting Television sports department. The idea was conceived in a meeting between Ali Bacher & Mike Demaine at the UCBSA offices in Johannesburg in 1991 & used for the first time in South African domestic cricket competitions that season (with the approval of the ICC). After the successful use of the technology in 1991 the ICC then agreed for the UCBSA and the SABC to use the technology in the television coverage of international matches in South Africa in 1992. It debuted in Test cricket in November 1992 at Kingsmead,Appointment
The third umpire is appointed from the Elite Panel of ICC Umpires or the International Panel of ICC Umpires for Test matches, ODIs, and T20Is. For all Test matches, and for ODIs where DRS is used, the third umpire is appointed by the ICC, and is a different nationality to the two sides. For ODIs where DRS is ''not'' used, and for all T20Is, the third umpire is appointed by the home side's Governing body.Functions
Decision requests
An on-field umpire can, at his own discretion, use a radio link to refer particular types of close decision to the third umpire, this is called an Umpire Review. When the full Umpire Decision Review System is ''not'' in use, the third umpire uses television replays (only) to assist him in coming to a decision. When the full DRS is in use, players can also initiate reviews of particular decisions by the on-field umpires, this is called a Player Review. These are judged by the third umpire, and the third umpire has the full range of technology available beyond simple replays, for both Umpire Reviews and Player Reviews.Emergency on-field umpire
In the case of injury or illness to one of the on-field umpires, the third umpire will take his place. The third umpire duties will then be taken on by the fourth umpire. For example, during the 4th ODI between Australia and India at Canberra in 2015–16, umpire Richard Kettleborough was injured during Australia's innings and was replaced by third umpire Paul Wilson.References
See also
* Fourth umpire * Instant replay in Major League Baseball {{Cricket positions Cricket terminology Cricket umpiring Cricket laws and regulations