DLS (DUCKWORTH-LEWIS-STERN) METHOD - CURRENT EVENTS
News: Frank Duckworth dies: How his
DLS method works
What's in the news?
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Statistician Frank Duckworth, co-inventor of the
Duckworth-Lewis method, has passed away at the age of 84.
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His formula is used to determine results in
rain-curtailed cricket matches.
Duckworth-Lewis Method:
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The Duckworth-Lewis method was created by
statistician Frank Duckworth and former cricketer Tony Lewis.
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It adjusts
cricket scores when rain interrupts play.
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The method uses a chart that factors in the
remaining deliveries and wickets to calculate a fair score target.
Backdrop:
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It was introduced after an unfair game outcome in
the 1992 Cricket World Cup semi-final where South Africa lost due to an
inadequate rain rule.
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This method was officially adopted by the International Cricket Council in 1999.
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Since its adoption, it has been essential for
50-over cricket, though less effective in T20 formats.
Working of
Duckworth-Lewis Method:
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The Duckworth-Lewis method combines the remaining deliveries and wickets to create a “resource
percentage.”
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A chart, known as the DL chart, helps calculate
this percentage for any match situation.
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The chart starts with ‘100%’ when all overs and
wickets are available, decreasing as resources diminish.
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When play resumes after an interruption, the method
adjusts the target score based on the resources left.
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The method allows
for fairer game conclusions under disrupted conditions.