How can i understand Duckworth-Lewis system?

Question

I no it is correct but how dies it function? i dont get the mathematics behind it..

Answer 1

personally, i dont think anyone properly understnds it, i know i sure as h**l dont! LOL

Answer 2

The D/L method of resetting targets in rain-affected one-day cricket matches has now been in use for well over two years and has been adopted for use in most test playing countries of the world.The method is the invention of Frank Duckworth and Tony Lewis

The Method

The Duckworth Lewis Method for curtailed matches is based on “resources”. It is considered that every team has two “resources” and based on that the calculation is made. The two resources are the number of overs the team has to receive and the number of wickets the team has in hand. Keeping these two resources in mind and by applying this method a team’s ability to score runs could be calculated and thus the target score could be set. If the other team crosses this score then it will win otherwise it will lose.

One needs to know the resources available to the team at the time of suspension of the match and at its resumption, to calculate the revised target of the curtailed match.

When the side batting second, have less run scoring resources at their disposal than the side which batted first, than their target is adjusted downwards using the ratio of the resources available to the two sides.

But when the side batting first has its innings interrupted, then the side batting second have more resources at their disposal; and now it is necessary to adjust the target upwards.

In this case the adjustment is based on the runs that would be expected to be scored on average from the extra resources at their disposal. The number of these extra runs required is calculated by applying the excess resource percentage to the average total score in a 50-over innings, the value of 235 runs is used at present.

When the revised target has been calculated and the match has been played out to its completion, the result is described;

if the 2nd team reach the target score – they win by the number of wickets remaining to be out;

and if they do not reach the target – then they lose by the runs needed to achieve a tie.

One run short of the revised target results in a tie.

Answer 3

In the sport of cricket, the Duckworth-Lewis method (D/L method) is a mathematical way to calculate the target score for the team batting second in a one-day cricket or Twenty-20 cricket match interrupted by weather or other circumstance. It is generally accepted to be a fair and accurate method of setting a target score, but as it attempts to predict what would have happened had the game come to its natural conclusion, it generates some controversy.

A simple example of the D/L method being applied was the first One Day International (ODI) between India and Pakistan in their 2006 ODI series. India batted first, and were all out in the 49th over for 328. Pakistan, batting second, were 7 wickets down for 311 when bad light stopped play after the 47th over.

In this example, Pakistan's target had the match continued was 18 runs in as many balls, with three wickets in hand. Considering the overall scoring rate throughout the match, this is a target most teams would be favored to achieve. And indeed, application of the D/L method resulted in a target score of 304 at the end of the 47th over, with the officially listed result as "Pakistan won by 7 runs (D/L Method)".

Answer 4

just go to the link pasted here below. you will get the answer

http://en.wikipedia.org/wiki/Duckworth-L...

regards