Dls Modern Target Calculator
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Reviewed for accuracy by Sher, Sports Science & Nutrition Specialist
Dls Modern Target Calculator
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Formula: Revised Target = Team1 Score x (Team2 Resources / Team1 Resources) + 1
Worked example — Team B needs 251 runs to win from 40 overs (RRR: 6.28)
Formula
Revised Target = Team1 Score x (Team2 Resources / Team1 Resources) + 1
The DLS method compares the resources (overs and wickets) available to each team. Resources are expressed as percentages from a lookup table. The revised target scales the first team's score by the ratio of resources available to each team, ensuring a fair contest when overs are lost to interruptions.
Worked Examples
Example 1: Rain-Shortened ODI Match
Problem:Team A scores 280 in 50 overs. Rain reduces Team B's innings to 40 overs. What is the revised DLS target?
Solution:Team A used 100% resources (50 overs, 10 wickets). Team B has approximately 89.3% resources available (40 overs, 10 wickets). Resource ratio = 89.3% / 100% = 0.893. Revised par score = 280 x 0.893 = 250. Revised target = 250 + 1 = 251.
Result:Team B needs 251 runs to win from 40 overs (RRR: 6.28)
Example 2: Mid-Innings Interruption
Problem:Team A scored 280/10 in 50 overs. Team B is 85/2 after 15 overs when rain stops play. 10 overs are lost. What is the revised target?
Solution:Team A resources: 100% (full 50 overs). Team B original resources: 100% (50 overs, 10 wickets). Resources at interruption (15 overs used, 2 wkts lost): calculated from resource table. Resources lost due to delay: resources at 35 overs/2 wkts - resources at 25 overs/2 wkts. Revised target = 280 x (adjusted resource ratio) + 1.
Result:Revised target accounts for lost overs while crediting runs already scored
Frequently Asked Questions
What is the DLS Modern method in cricket?
The Duckworth-Lewis-Stern (DLS) Modern method is the current standard system used in limited-overs cricket to calculate revised targets when a match is interrupted by rain or other factors. It replaced the older Duckworth-Lewis method and was updated by Professor Steven Stern, hence the addition of his name. The modern version uses a more sophisticated mathematical model that better accounts for scoring patterns in contemporary cricket, where batsmen tend to score more aggressively in the later overs. It considers the resources available to each team based on overs and wickets remaining to produce a fair revised target.
How does the DLS method calculate revised targets?
The DLS method calculates revised targets by comparing the resources available to both teams. Resources are determined by two factors: the number of overs remaining and the number of wickets in hand. Each combination of overs and wickets corresponds to a specific resource percentage from a detailed lookup table. If Team 2 has fewer resources available than Team 1 used, the target is scaled down proportionally. If Team 2 has more resources, runs are added to the target using the G50 value, which represents the average score in a 50-over innings. The revised target ensures both teams face a proportionally fair challenge.
What are resources in the DLS system?
In the DLS system, resources represent a team's remaining batting potential expressed as a percentage. A team starting a 50-over innings with all 10 wickets has 100% of its resources. As overs are bowled and wickets fall, the available resources decrease. Losing wickets has a greater impact on resources when many overs remain compared to when few overs are left. Similarly, losing overs has more impact when all wickets are intact versus when several are already gone. The resource table contains values for every possible combination of overs remaining (0 to 50) and wickets lost (0 to 9), allowing precise calculations for any match situation.
Why was the original DLS method updated to the modern version?
The original Duckworth-Lewis method was updated because scoring patterns in cricket evolved significantly over the years. Batsmen became more aggressive, particularly in the middle and death overs, making the original resource percentages less accurate. Professor Steven Stern revised the mathematical model to reflect modern batting strategies, where teams frequently score at much higher rates in the final 10 overs compared to historical averages. The modern method also improved handling of situations involving multiple interruptions and addressed edge cases where the original formula could produce counterintuitive results. The ICC formally adopted the updated DLS method in 2014.
When is the DLS method applied during a cricket match?
The DLS method is applied whenever a limited-overs cricket match (ODI or T20) is interrupted and the overs available to either team are reduced below their original allocation. Common triggers include rain delays, bad light stoppages, or other weather-related interruptions. The method can be applied at any point during either innings and can handle multiple interruptions within the same match. It is also used when the first innings is shortened and the second innings receives a different number of overs. Match referees and scorers use official DLS software provided by the ICC to calculate the revised targets in real time.
What is par score in DLS calculations?
The par score is the number of runs that the team batting second needs to have scored at any point during their innings to be considered level with the team that batted first, given the resources used up to that moment. If the match is abandoned at any stage during the second innings, the result is determined by comparing the actual score with the par score at that point. If the batting team is ahead of par they win; if behind, they lose. The par score changes after every ball bowled and every wicket taken, making it a dynamic benchmark that reflects the current match situation in real time.
How does losing wickets affect the DLS target?
Losing wickets significantly impacts the DLS calculations because wickets represent a major component of a team's remaining resources. When a team loses wickets early, their resource percentage drops substantially because they have fewer batsmen available to utilize the remaining overs. For example, a team at 30 overs remaining with no wickets lost has significantly more resources than one at 30 overs remaining with 5 wickets down. This means that if a rain interruption occurs when the chasing team has lost several wickets, the revised target will be lower because the interruption deprives them of fewer potential resources than it would if they had all wickets intact.
Can the DLS revised target be higher than the original target?
Yes, the DLS revised target can sometimes be higher than the original target. This happens when the team batting second ends up with more resources available than the team batting first used. A common scenario is when rain interrupts the first innings, reducing it to fewer overs, but the second innings can be played in full or with more overs than originally expected. In such cases, the DLS method adds runs to the first team's score to account for the additional resources available to the chasing team. The number of runs added is based on the G50 value multiplied by the excess resource percentage.
What is the G50 value used in DLS calculations?
The G50 value is a key parameter in the DLS method that represents the average total runs scored in an uninterrupted 50-over innings under current playing conditions and scoring trends. The ICC periodically updates this value to reflect changes in overall scoring rates across international cricket. As of recent updates, the G50 value for ODIs is approximately 245 runs. This value serves as the baseline for adjusting targets when teams have different resource percentages. When the chasing team has more resources, runs equal to the excess resource percentage multiplied by G50 are added to the target, ensuring a proportionally fair contest.
How accurate is the DLS method in producing fair results?
The DLS method is widely considered the most fair and mathematically rigorous system available for adjusting targets in rain-affected matches, though no system can perfectly replicate the outcome of a full uninterrupted match. Statistical analyses have shown that the DLS method produces results that closely align with what would likely have happened without interruptions in the vast majority of cases. However, critics point out that it does not account for pitch deterioration, dew factor, or pressure of chasing under floodlights. The method also assumes that all teams score in similar patterns relative to their resources, which may not always hold true for specific teams with unusual batting strategies.
References
Reviewed for accuracy by Sher, Sports Science & Nutrition Specialist · Editorial policy
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