Editing Duckworth–Lewis–Stern method (section)

{{short description|Mathematical cricket match scoring formulation}}
{{about|the cricketing term|the Irish pop group|The Duckworth Lewis Method}}
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[[File:The Oval test match - geograph.org.uk - 915221.jpg|thumb|A rain delay at [[The Oval]], England]]
[[File:Bad Light Stopped Play - geograph.org.uk - 1855271.jpg|thumb|275px|Scoreboard at Trent Bridge indicating that bad light has stopped play.]]
The '''Duckworth–Lewis–Stern method''' ('''DLS method''' or '''DLS''') previously known as the '''Duckworth–Lewis method''' ('''D/L''') is a mathematical formulation designed to calculate the target score (number of runs needed to win) for the team batting second in a [[limited overs cricket]] match interrupted by weather or other circumstances. The method was devised by two English [[statistician]]s, [[Frank Duckworth]] and [[Tony Lewis (mathematician)|Tony Lewis]], and was formerly known as the '''Duckworth–Lewis method''' ('''D/L''').<ref name="dec">{{cite news|url=http://news.bbc.co.uk/sport1/hi/cricket/6222943.stm|title=A Decade of Duckworth–Lewis|date=1 January 2007|work=BBC Sport|access-date=21 March 2009}}</ref> It was introduced in 1997, and adopted officially by the [[International Cricket Council]] (ICC) in 1999. After the retirement of both Duckworth and Lewis, the Australian statistician [[Steven Stern]] became the custodian of the method, which was renamed to its current title in November 2014.<ref name="renamed">{{cite web|url=http://www.cricbuzz.com/cricket-series/cricket-news/69983/introducing-duckworth-lewis-stern-method|title=Introducing Duckworth–Lewis–Stern method|date = 12 February 2015|publisher=Cricbuzz|access-date=30 March 2015}}</ref><ref>{{cite web |url=http://www.espncricinfo.com/story/_/id/19577040/how-duckworth-lewis-stern-method-works |title=How the Duckworth–Lewis–Stern method works |author=S Rajesh |date=8 June 2017 |publisher=ESPN |work=Cricinfo |access-date=13 April 2018 }}</ref> In 2014, he refined the model to better fit modern scoring trends, especially in T20 cricket, resulting in the updated Duckworth-Lewis-Stern method.<ref>{{cite web |last1=Arvind |first1=Rawat |title=DLS Method in Cricket: A guide of fair play in wet conditions |url=https://stumpsinfo.com/dls-method-in-cricket-a-guide-of-fair-play-in-wet-conditions/ |website=stumpsinfo |date=14 June 2024 |publisher=Arvind |access-date=14 June 2024}}</ref> This refined method remains the standard for handling rain-affected matches in international cricket today.

The target score in cricket matches without interruptions is one more than the number of runs scored by the team that batted first. When [[over (cricket)|over]]s are lost, setting an adjusted target for the team batting second is not as simple as reducing the run target proportionally to the loss in overs, because a team with ten wickets in hand and 25 overs to bat can play more aggressively than if they had ten wickets and a full 50 overs, for example, and can consequently achieve a higher [[run rate]]. The DLS method is an attempt to set a statistically fair target for the second team's innings, which is the same difficulty as the original target. The basic principle is that each team in a limited-overs match has two resources available with which to score runs (overs to play and wickets remaining), and the target is adjusted proportionally to the change in the combination of these two resources.

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