What is UDRS or DRS
The Umpire Decision Review System (UDRS or DRS) is a new technology based system currently being used on an experimental basis in the sport of cricket.
The system is being used only in Test Cricket for the sole purpose of reviewing the controversial decisions made by the on-field umpires in the case of a batsman being dismissed or not.
UDRS system was first used on 24 November 2009 in Test Matches
The UDRS system was officially launched by International Cricket Council on 24 November 2009 during the first Test between New Zealand and Pakistan at the University Oval in Dunedin.
UDRS system in ODIs
It was first used in ODIs in January 2011, in England’s series against Australia.
Recently, the ICC has made the UDRS mandatory in all international matches.
Cost of UDRS System
The UDRS costs approximately USD 56,000 per match day, that is, almost Rs 25 lakh. And thus, for a five day Test match, the cost may go upto Rs 1.25 crore.
How does UDRS work :
Each team is allowed to make two unsuccessful review requests per innings during a match. A fielding team may use the system to dispute a "not out" call and a batting team may do so to dispute an "out" call.
The fielding team captain or the batsman being dismissed invokes the challenge by signalling a "T" with the arms. Once the challenge is invoked, acknowledged, and agreed, the Third Umpire reviews the play. While umpires may request the Third Umpire for certain close calls such as line calls (to determine run outs and stumpings) and boundary calls, a challenge is used in situations that may result in a dismissal: for example, to determine if the ball is a legal catch (making contact with the batsman's bat or glove and not touching the ground before being held by a fielder) or if a delivery made the criteria for a leg before wicket dismissal (hitting the ground in line or on the off side and hitting the batsman in line with a path that would have hit the wicket). The Third Umpire then reports to the on-field umpire whether his analysis supports the original call, contradicts the call, or is inconclusive. The on-field umpire then makes the final decision: either re-signalling a call that is standing or revoking a call that is being reversed and then making the corrected signal.
Each team can go for referrals until they use their share of unsuccessful reviews. Under the DRS rule only clearly incorrect decisions are reversed; if the Third Umpire's analysis is within established margins of error or is otherwise inconclusive, the on-field umpire's original call stands.
When a not-out LBW decision is evaluated, and if the replay demonstrates the ball has made impact more than 2.5m away from the wickets, the umpires also have to consider another feature: the distance the ball has travelled between pitching and hitting the pad.
If that distance (between pitching and pad) is less than 40cm and if the ball has to travel more than 2.5m to reach the stumps, then any not-out decision given by the on-field umpire will remain not out.
It has also been decided that if the batsman is more than 3.5m from the wicket, then again not-out decisions will not be reversed.
The only picture in which an LBW decision will be reversed in favor of the bowler is if the batsman is more than 2.5m away from the wicket, if the distance is less than 3.5m and the distance between pitching and point of impact is more than 40cm. In that case, some part of the ball must be hitting the middle stump, and the whole ball must be hitting the stumps below the bails. In cases where the original decision is out, the 2.5m or 40cm distances do not apply, as in that state Hawk Eye must show the ball to be completely missing the stumps in order for the umpire to undo his decision.
Technology
The UDRS primarily uses a ball tracking technology, the Hawk-eye, which shows the ball’s trajectory towards the stumps in a visual representation, thereby aiding in giving Leg Before decisions. However, the path that a ball takes depends on lots of related scientific and other external factors, like the bounce on the pitch, seam movement, weather conditions and the like. It is thus not possible for the Hawk-eye to gauge the ball’s movement in a certain manner, it can only predict that. But nevertheless it does manage to give a more than satisfactory representation. The other technology in the UDRS, the very famous, ‘Hot –Spot’, is comparatively much more foolproof with its infra-red transmission of a negative image to validate the umpire’s decision for any snick or bat-pad verdict. However, the viewers didn’t get to see it in this World Cup as the Melbourne based company that supplies ‘Hot Spot’ has backed out of its earlier promise of delivering it by the knockout stages of the tournament
UDRS in ICC World Cup 2011
The first referral of the World Cup came after the 4th ball of the 2nd innings was bowled. India's Shanthakumaran Sreesanth had bowled a yorker and the umpire declared it not out.
Dhoni referred it to the TV umpire and a replay showed it might have missed the leg stump, so the original decision was upheld. The match marked the debut of the controversial umpire referral system in World Cup cricket.
Dhoni says no to UDRS system
Indian captain MS Dhoni on Wednesday(3 November 2010) said he was not willing to support the Umpires Decision Review System (UDRS) if it doesn't come with a warranty.
Dhoni said, "Referral system as I personally believe is not a cent per cent thing. It doesn't give cent per cent return and it is not always correct."
"I am not going to buy a life jacket that doesn't come with a warranty. And we are concerned about the big money that we are supposed to spend if the UDRS system comes into the game," said Dhoni, asking the umpires to step up and raise their performance. "I don't support the UDRS system as you have two gentlemen standing as umpires on the filed, who are professionals. They also have the support of the third umpire."
Garner labels review system as a 'gimmick'
West Indies legend Joel Garner has labelled the controversial umpire decision review system currently being introduced into Test cricket "a gimmick" and claimed it is "not working".
"I can understand the use of TV technology in terms of run outs, stumpings and that sort of thing, like whether the ball has pitched between wicket and wicket or outside leg-stump, if the umpire has doubts,"
"You still want the umpires to use their own judgment. If you're going to use it, it should only be used specifically for one or two things but not to question every little thing that happens with the umpires."
Master blaster Sachin Tendulkar on Umpire Decision Review System (UDRS)
Master blaster Sachin Tendulkar on Thursday (16/06/2011) said that he was not against the use of the Umpire Decision Review System (UDRS). UDRS would be more effective with the support of snickometer and hotspot technology.
He said the use of these two, along with the UDRS, would give more consistent results.
Sachin said that Hawkeye, another technology used to assist umpires, was not always foolproof in judging the line and bounce of the ball.
UDRS is a joke in present form: Rashid Latif
Pakistan's former captain Rashid Latif says he shares Indian skipper Mahendra Singh Dhoni's concerns about the accuracy of the Umpires Decision Review System (UDRS) as the innovation is nothing but a "joke" in its present form.
He gave the example of the India and Ireland match in Bangalore.
"In the India-Ireland match, an Irish batsman (Cusack) was given LBW after a review. Earlier, the umpire correctly turned down the appeal because the batsman was well down the track - more than 2.5 metres. To me, it was a clear-cut decision but the hawk-eye suggested otherwise. If the wicket was of the Perth, then it would be a mind-boggling decision,"
"The manner in which the system has been applied in the World Cup and the way decisions of the umpires have been reversed or upheld because of it indicate it is nothing but a joke," Latif said.
Percentage of correct decisions in the ICC World Cup
ICC flaunts the fact that the percentage of correct decisions in the World Cup has risen to 97.82 from 90.18 due to the use of UDRS but its a long way to go.
The Umpire Decision Review System (UDRS or DRS) is a new technology based system currently being used on an experimental basis in the sport of cricket.
The system is being used only in Test Cricket for the sole purpose of reviewing the controversial decisions made by the on-field umpires in the case of a batsman being dismissed or not.
UDRS system was first used on 24 November 2009 in Test Matches
The UDRS system was officially launched by International Cricket Council on 24 November 2009 during the first Test between New Zealand and Pakistan at the University Oval in Dunedin.
UDRS system in ODIs
It was first used in ODIs in January 2011, in England’s series against Australia.
Recently, the ICC has made the UDRS mandatory in all international matches.
Cost of UDRS System
The UDRS costs approximately USD 56,000 per match day, that is, almost Rs 25 lakh. And thus, for a five day Test match, the cost may go upto Rs 1.25 crore.
How does UDRS work :
Each team is allowed to make two unsuccessful review requests per innings during a match. A fielding team may use the system to dispute a "not out" call and a batting team may do so to dispute an "out" call.
The fielding team captain or the batsman being dismissed invokes the challenge by signalling a "T" with the arms. Once the challenge is invoked, acknowledged, and agreed, the Third Umpire reviews the play. While umpires may request the Third Umpire for certain close calls such as line calls (to determine run outs and stumpings) and boundary calls, a challenge is used in situations that may result in a dismissal: for example, to determine if the ball is a legal catch (making contact with the batsman's bat or glove and not touching the ground before being held by a fielder) or if a delivery made the criteria for a leg before wicket dismissal (hitting the ground in line or on the off side and hitting the batsman in line with a path that would have hit the wicket). The Third Umpire then reports to the on-field umpire whether his analysis supports the original call, contradicts the call, or is inconclusive. The on-field umpire then makes the final decision: either re-signalling a call that is standing or revoking a call that is being reversed and then making the corrected signal.
Each team can go for referrals until they use their share of unsuccessful reviews. Under the DRS rule only clearly incorrect decisions are reversed; if the Third Umpire's analysis is within established margins of error or is otherwise inconclusive, the on-field umpire's original call stands.
When a not-out LBW decision is evaluated, and if the replay demonstrates the ball has made impact more than 2.5m away from the wickets, the umpires also have to consider another feature: the distance the ball has travelled between pitching and hitting the pad.
If that distance (between pitching and pad) is less than 40cm and if the ball has to travel more than 2.5m to reach the stumps, then any not-out decision given by the on-field umpire will remain not out.
It has also been decided that if the batsman is more than 3.5m from the wicket, then again not-out decisions will not be reversed.
The only picture in which an LBW decision will be reversed in favor of the bowler is if the batsman is more than 2.5m away from the wicket, if the distance is less than 3.5m and the distance between pitching and point of impact is more than 40cm. In that case, some part of the ball must be hitting the middle stump, and the whole ball must be hitting the stumps below the bails. In cases where the original decision is out, the 2.5m or 40cm distances do not apply, as in that state Hawk Eye must show the ball to be completely missing the stumps in order for the umpire to undo his decision.
Technology
The UDRS primarily uses a ball tracking technology, the Hawk-eye, which shows the ball’s trajectory towards the stumps in a visual representation, thereby aiding in giving Leg Before decisions. However, the path that a ball takes depends on lots of related scientific and other external factors, like the bounce on the pitch, seam movement, weather conditions and the like. It is thus not possible for the Hawk-eye to gauge the ball’s movement in a certain manner, it can only predict that. But nevertheless it does manage to give a more than satisfactory representation. The other technology in the UDRS, the very famous, ‘Hot –Spot’, is comparatively much more foolproof with its infra-red transmission of a negative image to validate the umpire’s decision for any snick or bat-pad verdict. However, the viewers didn’t get to see it in this World Cup as the Melbourne based company that supplies ‘Hot Spot’ has backed out of its earlier promise of delivering it by the knockout stages of the tournament
UDRS in ICC World Cup 2011
The first referral of the World Cup came after the 4th ball of the 2nd innings was bowled. India's Shanthakumaran Sreesanth had bowled a yorker and the umpire declared it not out.
Dhoni referred it to the TV umpire and a replay showed it might have missed the leg stump, so the original decision was upheld. The match marked the debut of the controversial umpire referral system in World Cup cricket.
Dhoni says no to UDRS system
Indian captain MS Dhoni on Wednesday(3 November 2010) said he was not willing to support the Umpires Decision Review System (UDRS) if it doesn't come with a warranty.
Dhoni said, "Referral system as I personally believe is not a cent per cent thing. It doesn't give cent per cent return and it is not always correct."
"I am not going to buy a life jacket that doesn't come with a warranty. And we are concerned about the big money that we are supposed to spend if the UDRS system comes into the game," said Dhoni, asking the umpires to step up and raise their performance. "I don't support the UDRS system as you have two gentlemen standing as umpires on the filed, who are professionals. They also have the support of the third umpire."
Garner labels review system as a 'gimmick'
West Indies legend Joel Garner has labelled the controversial umpire decision review system currently being introduced into Test cricket "a gimmick" and claimed it is "not working".
"I can understand the use of TV technology in terms of run outs, stumpings and that sort of thing, like whether the ball has pitched between wicket and wicket or outside leg-stump, if the umpire has doubts,"
"You still want the umpires to use their own judgment. If you're going to use it, it should only be used specifically for one or two things but not to question every little thing that happens with the umpires."
Master blaster Sachin Tendulkar on Umpire Decision Review System (UDRS)
Master blaster Sachin Tendulkar on Thursday (16/06/2011) said that he was not against the use of the Umpire Decision Review System (UDRS). UDRS would be more effective with the support of snickometer and hotspot technology.
He said the use of these two, along with the UDRS, would give more consistent results.
Sachin said that Hawkeye, another technology used to assist umpires, was not always foolproof in judging the line and bounce of the ball.
UDRS is a joke in present form: Rashid Latif
Pakistan's former captain Rashid Latif says he shares Indian skipper Mahendra Singh Dhoni's concerns about the accuracy of the Umpires Decision Review System (UDRS) as the innovation is nothing but a "joke" in its present form.
He gave the example of the India and Ireland match in Bangalore.
"In the India-Ireland match, an Irish batsman (Cusack) was given LBW after a review. Earlier, the umpire correctly turned down the appeal because the batsman was well down the track - more than 2.5 metres. To me, it was a clear-cut decision but the hawk-eye suggested otherwise. If the wicket was of the Perth, then it would be a mind-boggling decision,"
"The manner in which the system has been applied in the World Cup and the way decisions of the umpires have been reversed or upheld because of it indicate it is nothing but a joke," Latif said.
Percentage of correct decisions in the ICC World Cup
ICC flaunts the fact that the percentage of correct decisions in the World Cup has risen to 97.82 from 90.18 due to the use of UDRS but its a long way to go.
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