Lewis of ‘DLS method’ cricket fame dies, aged 78 – cricket

Tony Lewis, one of the lads behind the Duckworth-Lewis-Stern methodology utilized in climate-affected restricted overs cricket matches, has died aged 78, the England and Wales Cricket Board introduced Wednesday. “It is with much sadness that the ECB has learned of the passing of Tony Lewis MBE, aged 78,” stated an announcement.

“Tony, alongside fellow mathematician Frank Duckworth, devised the Duckworth-Lewis methodology which was launched in 1997 and adopted formally by the ICC (International Cricket Council) in 1999.

“Renamed the Duckworth-Lewis-Stern Method in 2014, the mathematical formulation continues for use in rain diminished restricted overs cricket video games throughout the globe.” A profession tutorial, and never the Welshman of the identical identify who captained England, Lewis obtained an MBE (Member of the Order of the British Empire) for his companies to cricket and arithmetic in 2010.

“Cricket is deeply indebted to both Tony and Frank’s contributions to the sport,” the ECB added.

“We send our sincere condolences to Tony’s family.” The formulation took place in response to the extraordinary climax of a rain-interrupted 1992 World Cup semi-closing in Sydney.

The methodology then in use was primarily based on eradicating the bottom-scoring overs from every workforce’s innings.

But it produced a farcical end to a showpiece semi-closing when South Africa, who had confronted the difficult however achievable goal of 22 runs off 13 balls to beat England, had been left with the unattainable activity of scoring 21 runs off one ball after a rain delay.

Duckworth, the extra outspoken of the founding duo — fellow statistician Steven Stern helped revise the formulation a number of years later — stated: “I recall hearing (commentator) Christopher Martin-Jenkins on radio saying ‘surely someone, somewhere could come up with something better’ and I soon realised that it was a mathematical problem that required a mathematical solution.” The massive distinction between Duckworth-Lewis and former strategies was that it gave credit score to sides defending a goal for taking wickets in addition to chasing sides for scoring runs.

Significantly, this meant the goal may very well be adjusted proportionately within the occasion of multiple stoppage.

An enduring criticism of the system is that it’s obscure with out accessing a chart that reveals the place groups should be over by over, for nonetheless many wickets they’ve misplaced. But the sight of a D/L goal quickly grew to become a well-known characteristic on cricket scoreboards all over the world.

Several sides, nonetheless, have nonetheless confused the goal wanted to tie with the overall they require to win, with co-hosts South Africa being knocked out of the 2003 World Cup after they made this error towards Sri Lanka in Durban.

The formulation has additionally been criticised for not being suited to Twenty20 matches, cricket’s shortest format, which got here into being after Duckworth-Lewis was established.

No different methodology, nonetheless, has but discovered favour with the ICC.

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