If a match is intefered by rain and the result is restrained by it, they calculate a score [which is unlikely] by the Duckworth-Lewis method. But how do they do that? Am I the only one who never understood the Duckworth Lewis method. Okay, I was so vetty that I took pains[:P] to do a petty research about it.[Mostly Ctrl+C, Ctrl+V work].
Who are these complicators?
The D/L method was devised by two English statisticians, Frank Duckworth and Tony Lewis.
Applying the D/L method
The procedure for setting a revised target, which is the same for any number of stoppages at any stage of the match, is as follows.
For each team's innings
(a) from the table note the resource percentage the team had available at the start of their innings;
(b) using the table, calculate the resource percentage lost by each interruption;
(c) hence calculate the resource percentage available.
If Team 2 have less resources available than Team 1, then calculate the ratio of the resources available to the two teams. Team 2's revised target is obtained by scaling down Team 1's score by this ratio. The figure so obtained is rounded down to the next whole number to give the score needed for a tie. The target is one more run than this. The procedure by which a tie is always possible is a consequence of a change in playing conditions introduced internationally from April 1999.
If Team 2 have more resources available than Team 1, then calculate the amount by which Team 2's resource percentage exceeds Team 1's. Work out this excess as a percentage of 225 [the average 50-over score in 'first class' matches and one-day internationals (ODIs)]. Rounding this down to the next whole number gives the extra runs to add on to Team 1's score to give the score to tie. Adding one run gives Team 2's target.
The inventors of the Duckworth-Lewis method have made a plea to the media and public before the World Cup: "Give our system a fair chance."
The key to understanding the method is "resources lost" - a combination of wickets in hand and the number of overs lost to rain, expressed as a percentage. The calculations involve head-scratching and brief use of a calculator after reference to the correct set of tables. As the medieval maxim goes: "Let justice be done though the heavens fall".
Shhhhh...no... no...I dropped the idea of getting it clear. So, all I have to do is simply wait for the Umpires' or referees' decision and then settle it.
Here's the calculator. Give it a try...
http://www.duckworth-lewis.com/CalculatorforT20ODI/tabid/56/language/en-GB/Default.aspx
For more details:
http://static.cricinfo.com/db/ABOUT_CRICKET/RAIN_RULES/DUCKWORTH_LEWIS_1999.html
Who are these complicators?
The D/L method was devised by two English statisticians, Frank Duckworth and Tony Lewis.
Applying the D/L method
The procedure for setting a revised target, which is the same for any number of stoppages at any stage of the match, is as follows.
For each team's innings
(a) from the table note the resource percentage the team had available at the start of their innings;
(b) using the table, calculate the resource percentage lost by each interruption;
(c) hence calculate the resource percentage available.
If Team 2 have less resources available than Team 1, then calculate the ratio of the resources available to the two teams. Team 2's revised target is obtained by scaling down Team 1's score by this ratio. The figure so obtained is rounded down to the next whole number to give the score needed for a tie. The target is one more run than this. The procedure by which a tie is always possible is a consequence of a change in playing conditions introduced internationally from April 1999.
If Team 2 have more resources available than Team 1, then calculate the amount by which Team 2's resource percentage exceeds Team 1's. Work out this excess as a percentage of 225 [the average 50-over score in 'first class' matches and one-day internationals (ODIs)]. Rounding this down to the next whole number gives the extra runs to add on to Team 1's score to give the score to tie. Adding one run gives Team 2's target.
The inventors of the Duckworth-Lewis method have made a plea to the media and public before the World Cup: "Give our system a fair chance."
The key to understanding the method is "resources lost" - a combination of wickets in hand and the number of overs lost to rain, expressed as a percentage. The calculations involve head-scratching and brief use of a calculator after reference to the correct set of tables. As the medieval maxim goes: "Let justice be done though the heavens fall".
Shhhhh...no... no...I dropped the idea of getting it clear. So, all I have to do is simply wait for the Umpires' or referees' decision and then settle it.
Here's the calculator. Give it a try...
http://www.duckworth-lewis.com/CalculatorforT20ODI/tabid/56/language/en-GB/Default.aspx
For more details:
http://static.cricinfo.com/db/ABOUT_CRICKET/RAIN_RULES/DUCKWORTH_LEWIS_1999.html
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