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Topic: Duckworth-Lewis method

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Duckworth-Lewis method - Wikipedia, the free encyclopedia It was devised by two statisticians, Frank Duckworth and Tony Lewis and has been adopted by the International Cricket Council as the standard method of calculating target scores in shortened one-day matches. In the sport of cricket, the Duckworth-Lewis method (D/L method) is a way to calculate the target score for the team batting second in a one-day cricket match interrupted by weather or other circumstances. Previous methods used to achieve the same task included run-rate ratios, simply selecting the score that the first team had achieved at the equivalent point in their innings, and targets derived by totalling the best scoring overs in the initial innings. en.wikipedia.org /wiki/Duckworth-Lewis_method   (458 words)

The Duckworth Lewis Method Q&A Similarly in an interrupted innings, the method of target revision cannot and should not distinguish between whether Team 1's innings were terminated by being all out or by using up their (revised) allocation of overs. To be totally dependent on a computer would mean that the method could not be used universally, it would be vulnerable to computer failure and it would be virtually impossible to explain how the targets were calculated. By the D/L method this advantage to Team 1 would be neutralised so that the target for Team 2 would be well below 150 in this circumstance, and fairly so, which maintains the advantage Team 2 had earned before the stoppage. www.surreydowns.org /archives/DL-Method-QA.htm   (3025 words)

For a fair formula The D/L method, according to Duckworth and Lewis, is based on an elegant mathematical model, and has till date been applied in over 350 LOIs, according to Duckworth and Lewis, and it has worked extremely well. Duckworth and Lewis analysed data compiled from hundreds of matches and worked out a (ball-by-ball) table that gives the percentage of these combined resources that remain for the overs left and wickets remaining. The basic method of application is as follows: For overs played before interruption, values are read off from the normal scores columns (this depends on the number of wickets that have fallen); after the interruption, values are read off from the target column depending upon the percentage of overs remaining. www.flonnet.com /fl1924/stories/20021206004410400.htm   (3034 words)

Cricinfo - Duckworth-Lewis The method is the invention of Frank Duckworth and Tony Lewis. The D/L method of resetting targets in rain-affected one-day cricket matches was trialled successfully during 1997 by the International Cricket Council(ICC), the ECB (England & Wales Cricket Board) and the Zimbabwe Cricket Union (ZCU). The D/L method works using the notion that teams have two resources with which to make as many runs as they can - these are the number of overs they have still to receive and the number of wickets they have in hand. www.cricinfo.com /db/ABOUT_CRICKET/RAIN_RULES/DUCKWORTH_LEWIS.html   (1876 words)

The Duckworth Lewis Method The Duckworth/Lewis (D/L) method of target resetting in one-day cricket was first used early in 1997 and has since spread to most of the cricketing world. On 1 Sept 2001 the method became the official 'rain-rule' in use in all one-day competitions in ICC full, associate and affiliate member countries and is likely to be used also in domestic competitions in these countries. The method is based on the concept that a match starts with both teams possessing the same resources to build their innings. www.surreydowns.org /archives/duckworth-lewis-method.htm   (2625 words)

CNN/SI - Cricket World Cup '99 - D/L method makes rain interruptions less controversial - Thursday May 13, 1999 02:21 PM Devised by Frank Duckworth, of the Royal Statistical Society, and Tony Lewis, a lecturer in computer studies and mathematics of the University of West England, the method aims to preserve any advantage that one team has before rain stops play. If overs are lost due to rain, the method is used to calculate how many runs would have been scored in the missing overs and revised targets are introduced. The organizers say the D/L method will be used whenever there is an interruption after the start of play which results in overs being lost. sportsillustrated.cnn.com /cricket/1999/world_cup/news/1999/05/13/duckworth_lewis   (514 words)

The result in cricket - Wikipedia, the free encyclopedia A no result, therefore, only occurs when weather conditions stop play before the second team have faced enough overs to have a recalculated target under the Duckworth-Lewis method or other rain rules. In one-day international cricket, one team needs to have faced less than 20 overs (of the allotted 50 for a match) for a match to be a no-result. A no result is effectively the same as a draw, but this can only occur in limited-overs cricket. en.wikipedia.org /wiki/The_result_in_cricket   (849 words)

rediff.com: cricket channel: Is Jayadevan's proposed method better than the Duckworth/Lewis method? When I discussed these two examples with Duckworth and Lewis, they acknowledged that the first situation does reveal a basic weakness in the D/L model (and indicated that their revised computer-dependent model would correct this anomaly). The J method must therefore pass the difficult test of first demonstrating its capability of handling all the five types of interruptions, and then showing that it can match D/L's acknowledged prowess in handling interruptions. Both the D/L and J methods are capable of calculating the winning target on a ball-to-ball basis when Team 2 is chasing its victory target; but the D/L method is better suited for such a calculation. www.rediff.com /cricket/2001/may/21srini.htm   (2720 words)

sport.iafrica.com today's news Duckworth/Lewis gets an upgrade The infamous Duckworth/Lewis method, used to re-calculate totals in rain-affected matches, is set to get an upgrade to ensure more fairness to both teams in matches where the side batting first sets an exceptionally high total. Losing no more wickets and scoring 12 runs in the next two overs followed by a terminal downpour would have handed the title to India," Frank Duckworth, one of the inventors of the method, explained to AFP. Co-inventor Tony Lewis went on to add that the duo have had a solution to the problem for a number of years already. sport.iafrica.com /news/274781.htm   (445 words)

School of Mathematical Sciences By using the Duckworth-Lewis Method, one can convert how many overs were remaining and how many wickets were fallen to give the team batting second a score had they faced all their overs or lost all theie wickets. Note that the duckworth-Lewis method assumes that the average score in a one-day international is 225 runs. The first method is to determine the relative level of victory. www.swin.edu.au /sport/cricket/jlmethod.htm   (366 words)

BBC SPORT Cricket Cricket gets more complex Duckworth and Lewis responded by pointing to a formula they came up with in the mid-1990s, which was eventually simplified for ease. Duckworth says problems still associated with the system are down more to problems in communication than the formula itself. But Duckworth dismisses suggestions he and his partner are now the most influential men in international cricket. news.bbc.co.uk /sport2/hi/cricket/3155478.stm   (641 words)

BBC Sport Academy Cricket Features Rain-affected run targets explained At this point, using the table produced by the Duckworth-Lewis method, the team's remaining resources are valued at 42.2%. So Duckworth and Lewis came up with the equation which determines how much a run target should be altered. Two statisticans, Frank Duckworth and Tony Lewis, got together and produced a system to help decide one-day cricket matches when rain interrupts play. news.bbc.co.uk /sportacademy/hi/sa/cricket/features/newsid_2660000/2660337.stm   (416 words)

The Hindu : Alternative method to resolve interrupted LOIs Jayadevan and we feel that his method has a balance while the existing method (Duckworth-Lewis) seems to favour one team. Jayadevan's model is based on regression method with percentage points allotted for runs scored and overs bowled and by also taking into account the fall of wickets. An alternative method to compute targets in interrupted limited over matches, mooted by a Thrissur-based civil engineer V. Jayadevan, will be forwarded by the BCCI to the ICC for approval. www.hindu.com /2004/03/06/stories/2004030607641600.htm   (309 words)

Abc of Cricket Forum I personally feel that the Duckworth/Lewis method is better than most others since it takes into consideration the number of wickets remaining which in turn means the amount of resources available to chase a given target. Normally, it is the side batting second which is better-off in a rain-curtailed match since it has a set target to chase and knows what it has to achieve and adapt accordingly, therefore any rain rule should have a tilt in the favour of the side batting first. How deep a side bats is the side's advantage/disadvantange, the rule should be equal to all the teams irrespective of the composition of a side. www.abcofcricket.com /forum/index.php?s=572852586018ce13694cdc7beece6c9f&showtopic=78&b=1&st=0&p=&   (621 words)

Duckworth-Lewis vs Jayadevan We can consider several criteria: how does the method handle different kinds of interruptions, is the underlying mathematical model valid, is the method sufficiently flexible etc., but, finally, it's all about the target being fair and reasonable in every conceivable situation. Not really, it's essentially the same method, although there was a minor improvement in 2002, and a major improvement in 2003 (after which we need a computer to calculate the D/L targets). In fact rediff.com explained the VJD method, carried a detailed comparison of D/L vs VJD and concluded that the VJD method could be marginally better. inhome.rediff.com /cricket/2005/may/30bhogle.htm   (1004 words)

Rashid Latif Cricket Academy :: The ICC :: Duckworth/Lewis Method The D/L method sets revised targets in rain-interrupted limited-overs matches in accordance with the relative run scoring resources which are at the disposal of the two sides. Butthe same table and the same method of calculation are used whatever the number of overs per innings. They thus fall 5 runs shortof the 185 runs needed to tie the match and the resultis described as ‘Team 1 win by 5 runs (D/L method)’. www.rlca.com.pk /duckworthlewis.asp   (2345 words)

General - Review - Duckworth & Lewis System. Duckworth and Lewis, with good marketing, have convinced the cricket authorities that their method is the right one to adjudicate in rain affected limited over matches. The Duckworth Lewis method of calculating what a team batting second needs to score in a rain affected limited overs match is a farce. If proof be needed that the Duckworth Lewis method doesn't work you need look no further than the final match between England and Zimbabwe at Lords on 22nd July 2000. www.dooyoo.co.uk /discussion/general-19/40982   (470 words)

The Duckworth/Lewis factor Duckworth and Lewis were the first to come up with something that was much fairer. For the South Africa vs New Zealand match, I am almost certain that the J method would have set NZ a much stiffer target (I don't have the exact details of all the interruptions and the J calculation in case of multiple interruptions is much more complicated than D/L). I accept that D/L method is the best but the flaw is that teams must be prepared to be ahead every ball from the 25th... www.rediff.com /wc2003/2003/mar/06bhogle.htm   (1167 words)

Voice of Ghatkopar - Do you think the D-Lewis system is fair? First of all the method should be explained to the public so that they understand how the target is calculated during a rain-affected match. www.mid-day.com /metro/ghatkopar/voice/2003/march/47041.htm   (312 words)

The Hindu : Hooper calls for change in Duckworth-Lewis method The method currently used, called the Duckworth/Lewis method after its inventors, meant the target for the West Indies in the match was very difficult to reach. The DuHooper calls for changeckworth/Lewis method, named after British statistician Frank Duckworth and Tony Lewis of the University of the West of England, was introduced to international cricket in 1999 in an experiment that will last until 2004. New Zealand captain Stephen Fleming brushed off criticism of the method, saying he was delighted with the performance of match-winner Scott Styris, who scored 63 and took six wickets for 25 in seven overs, a record for New Zealand in international limited overs cricket. www.hindu.com /2002/06/14/stories/2002061405592000.htm   (306 words)

South Africa v Sri Lanka - Reaction - theage.com.au According to the Duckworth-Lewis method the "par" score was 229, which meant the honours and the points were shared. Mark Boucher's decision not to take a single after playing the last ball of the 45th over to midwicket turned South Africa's Cup dream into nightmare under the Kingsmead lights, leaving the Springboks tied with Sri Lanka on modified totals under the Duckworth-Lewis formula. It was simple human error which finally cost them last night the chance of a date with what had been long been seen as their destiny. www.theage.com.au /articles/2003/03/04/1046540171092.html   (382 words)

Duckworth-Lewis The method is the invention of mathematicians Frank Duckworth and Tony Lewis. The Duckworth-Lewis (D/L) method of resetting targets in rain-affected one-day cricket matches has been controversial ever since it was introduced in 1997 by the International Cricket Council. With 199 runs on the board, they have exceeded their required target by 17.75 and so are declared the winners by 18 runs. www.netfundu.com /funduteam/Duckworth.htm   (718 words)

Rediff On The NeT: The dummy's guide to Duckworth-Lewis It is a great pleasure to thank Frank Duckworth and Tony Lewis for their wonderful co-operation and support; we have exchanged over half a dozen e-mails and the D/L response in every case has been remarkably prompt. There is apparently an ICC ruling that if the D/L method is used to reset the target in a rain-affected match, then the scores in that game will not be used in the calculation of net run rates (NRR). We then went through a series of other rules such as the parabola method and Clark curves which, although not obviously unfair to either team, had their blemishes and glitches. www.rediff.com /sports/1999/sep/16guest.htm   (4573 words)

Duckworth Lewis Method Explained. The catalyst for the introduction of the Duckworth Lewis method, was the ridiculous situation that occurred in the 1992 World Cup Semi Final match when South Africa were chasing a target of 252 set by England and needed 22 to win off 13 balls. Under the simple run rate method 126 or more wins the match for Side B. The number of wickets lost is immaterial. In Situation (a) then Side B would win by 13 runs (D/L method) and in situation (b) lose by 98 runs (D/L method). www.cricketeurope.net /DATABASE/FROMORG/articles/000003/000300.shtml   (386 words)

®adio amgen - sioe#45 - The Duckworth-Lewis Method ®adio amgen - sioe#45 - The Duckworth-Lewis Method www.radioamgen.com /sioe/045/index.html   (8 words)

Gulfnews: Duckworth-Lewis can be improved - Speed "Duckworth and Lewis themselves never said that this was a foolproof method, and are open to suggestions. But we have a further 18 months contract with Duckworth and Lewis that needs to be honoured. "As of now this is the best method to judge the winners in a rain-affected match though it could prove to disadvantageous to teams especially towards the close. archive.gulfnews.com /articles/03/03/21/81533.html   (424 words)

BBC - h2g2 - The Duckworth/Lewis Method of resetting targets in one-day cricket Frank Duckworth and Tony Lewis are a couple of Cambridge University statisticians who, being quite partial to cricket, decided to develop a truly fair system of score-adjustment for these rain-affected games. The method is a way of recalculating one-day cricket scores using statistical tables. Their method has become the recognised system for this sort of thing in all cricketing nations. www.bbc.co.uk /dna/ww2/A1004923   (1422 words)

:: VivaCricket :: ”New Duckworth-Lewis system in use Frank Duckworth, one of the inventors of the method explained that the new edition was designed to deal with matches like the ICC Cricket World Cup 2003 final where Australia set India a target of 360 to win. The D/L method of target resetting has been used for all ODI cricket since May 1999 and is widely recognised as a fair way of dealing with interrupted matches. The tables that are part of the D/L method are based on the average of scoring patterns over many matches. www.vivacricket.co.za /html/cat-48-101501.shtml   (539 words)

Online Duckworth Lewis Calculator This page explains the basic concepts of the Duckworth Lewis method with some examples. The Duckworth/Lewis system was invented by two statisticians, Frank Duckworth and Tony Lewis in an attempt to solve the perennial problem of creating a fair target for the side batting second in a limited-overs cricket match shortened by the weather. The error arises because the exact Duckworth Lewis resource values are not public knowledge and this calculator is only able to proximate those values. www.nimisis.com /projects/duckworth.php   (287 words)

indieville: review: the duckworth-lewis method - heb fod allan The Duckworth-Lewis Method, taking their name from a piece of cricket terminology (that's cricket the game, not the insect), is actually Dj Komikon and 'Y Dref'. Together, they've taken dozens of obscure samples from old Welsh radio broadcasts and have spliced and mixed them with a number of trippy beats and basslines. Heb Fod Allan is the latest release on Welsh label Catchpenny Records, and it's definitely an interesting one. www.indieville.com /reviews/duckworthlewismethod.htm   (188 words)

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