Duckworth Lewis Calculator
Calculate revised targets for rain-interrupted cricket matches using the Duckworth Lewis Stern (DLS) method. Find par scores and target scores instantly.
Match Settings
Result
Waiting for your inputs...
Enter Team 1's score and overs to calculate the DLS target
Understanding the Duckworth Lewis Stern Method
What is the DLS Method?
The Duckworth Lewis Stern (DLS) method is a mathematical formula used to calculate revised targets in rain-interrupted limited-overs cricket matches. It was developed by statisticians Frank Duckworth and Tony Lewis in 1997, and later updated by Steven Stern in 2014.
Why is DLS Needed?
Before DLS, methods like "average run rate" and "most productive overs" were used, but they were often unfair:
- Average run rate ignored wickets lost
- Most productive overs penalized aggressive batting
- Neither accounted for match situation properly
DLS considers both overs remaining and wickets in hand as resources available to a batting team.
Types of Interruptions
Team 2's Innings Delayed
Rain before Team 2 starts. They get fewer overs to chase.
Team 2's Innings Cut Short
Rain ends match early. Par score determines winner.
Team 2's Innings Interrupted
Rain during chase. Target adjusted for lost overs.
Team 1's Innings Affected
If Team 2 has more resources, runs are added to target.
Minimum Overs Requirement
For a match result using DLS:
- ODI: Both teams must face at least 20 overs
- T20: Both teams must face at least 5 overs
- Exception: If a team is bowled out or reaches target earlier
Frequently Asked Questions
What does par score mean in DLS?
Par score is the score Team 2 needs to tie the match at any point during their innings. If Team 2 is ahead of par when rain stops play, they win. If they are behind par, Team 1 wins.
Why do wickets matter in DLS calculations?
Wickets are a crucial resource. A team with 8 wickets in hand has more scoring potential than one with only 2 wickets, even with the same overs remaining. DLS accounts for this by assigning different resource percentages.
Can the target increase under DLS?
Yes! If Team 1's innings was cut short by rain, Team 2 may have more resources available. In this case, runs are added to Team 1's score to calculate the target, using the G50 parameter (average score in 50 overs).
What is the G50 parameter?
G50 is the average score expected from a team batting 50 overs with all wickets intact. It's currently set at 245 runs for international ODIs and is used when Team 2 has more resources than Team 1.
Is this calculator 100% accurate?
This calculator uses an approximation of the official DLS tables. The actual ICC DLS system uses proprietary tables that are regularly updated. For official matches, the on-field DLS software is used.
How is DLS different from the old D/L method?
The Stern update (2014) improved the method for high-scoring matches by making the resource percentages dependent on the first innings score, rather than using fixed tables. This is now called DLS (Duckworth-Lewis-Stern).
Related Calculators
Need Help with Math or Statistics?
Our expert tutors can help you understand probability, statistics, and mathematical formulas used in sports analytics!
Book Your Free Session