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Duckworth Lewis Method

But when Team 1’s innings has been interrupted, it often happens than Team 2 have
more resources at their disposal than had Team 1 and it is now necessary to adjust Team
2’s 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, referred to here as G50
For matches involving ICC full member nations, including Under-19 international
matches, or for matches between teams that play first class cricket, the value of G50 to
be used at present is 235. For lower levels of the game, G50 should be chosen to
represent the average score expected from the team batting first in an uninterrupted 50
overs-per-innings match. For teams between associate ICC member nations, the
recommended value of G50 is 190; for women’s ODIs, the recommended value is 175.
For U15 internationals, the recommended value is 200. For other levels of the game,
advice should be sought from the ICC.
2. Definitions
The team batting first are referred to as ‘Team 1’ and the team batting second are
referred to as ‘Team 2’.
In the table decimal fractions of an over are expressed in standard cricket notation;
i.e. 4.3 overs means 4 overs plus 3 balls.
The terms ‘target’ and ‘revised target’ are reserved exclusively for the minimum
score Team 2 need to win.
As with an uninterrupted match, if Team 2 make a score which is one run short of the
target, the match is tied.
The following symbols are used throughout:
N is the number of overs per innings for the match as decided at the moment of
delivery of the first ball of the match.
S is Team 1’s total score.
R1 is the resource percentage (relative to a full 50-over innings) available to Team 1.
R2 is the resource percentage (relative to a full 50-over innings) available to Team 2.
T is Team 2’s target score.
3. Calculation of the Percentage Resource Lost by a Suspension in Play
To compensate for any loss of overs due to a suspension in play during either Team 1’s
or Team 2’s innings, it is necessary first to calculate the resource percentage that has
been lost on account of this suspension.
If the suspension occurs between overs, use the sheet of the table which gives the figures
for whole numbers of overs. If it occurs mid-over, use the sheets of the table which
provide the figures for each individual ball.
3.1 For the start of the suspension in play, from the table note the resource percentage that
remained for the appropriate number of overs/ball left and wickets lost.
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