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CRICKET WORLD CUP |
The Duckworth-Lewis Rule
 Ever wondered what the phrase 'Duckworth-Lewis' means? Or what happens to a One Day match
when rain interrupts play and the full number of overs cannot be completed?
Contrary to popular belief the story does not centre around two gamblers Derek Bill and Jimmy Lewis, who were going through the odds of a One Day match. Debating the chances of Darren Lehman being out for nought Bill said,
"How much is a duckworth Lewis?"
Down came the rain and the bet was off.
The true story clearly involves none of the above but two gentlemen Frank Duckworth and Tony Lewis decide to sort of the mess one-day cricket matches when
rain interrupts play. And given that any name of credence in cricket requires a
double-barrel they joined their in a holy union to create Duckworth-Lewis.
The backbone of the rule states that at the start of a match, each team, with 11 players
and 50 overs to bowl or bat, is seen in terms of resources. Each team has 100% resources
at the start of each match. If a match is stopped and overs lost to rain, a teams
resources are reduced accordingly and the run target adjusted accordingly.
If team A have lost five wickets after 25 of their 50 overs when rain stops play using the table produced by the Duckworth-Lewis method, the team's remaining resources are
valued at 42.2%.
This takes into account the strength of the batsmen that have lost their wickets.
If 15 more overs are also lost through rain, the innings will be completed after only 10
more overs. So Team A has will have batted for only 35 overs.
The D/L method therefore equates that, with 10 overs left and five wickets lost, the team
has 26.1% of their resources left.
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