DLS Method Calculation Step-By-Step Worked Example

The DLS Method - Duckworth-Lewis-Stern - is the rain-rule mechanism that resolves shortened limited-overs matches. It replaced the much-disliked highest-scoring-overs system in 1997, was refined into Duckworth-Lewis-Stern from 2014, and is now the global standard for international and domestic limited-overs cricket. Most fans understand the headline output - the revised target - but few have walked through the underlying calculation. This piece does exactly that, using a real IPL 2026 rain-affected match as the worked example.

The Core Idea: Resources

The DLS Method's defining concept is "resources." Every team starts an innings with 100 percent of their resources - the combination of overs remaining and wickets in hand. As the innings progresses, both decrease. The DLS Method tracks how much of the resource pool a team has used or has remaining at any point.

When rain interrupts an innings, the team's available resources change. The revised target is calculated by comparing the resources actually available to each side and adjusting the original par accordingly.

For broader rules-context, our free hit rule explainer and concussion substitute rule guide cover related limited-overs regulations.

How Resources Are Counted

Resources are read from a published table - the DLS Resource Table. The rows are overs remaining; the columns are wickets in hand. Each cell shows the percentage of total resources available at that point.

Overs Left	0 wickets lost	5 wickets lost	9 wickets lost
50	100.0%	75.1%	27.5%
30	75.1%	56.6%	27.0%
20	58.9%	46.9%	26.5%
10	34.1%	30.5%	22.0%
5	18.4%	17.7%	15.4%

(Figures are illustrative; the official DLS table is more granular.)

For T20s, the table is scaled to 20 overs but uses the same logic.

The Worked Example: A Real IPL 2026 Match

Take a hypothetical IPL 2026 match between two teams - call them Team A and Team B - in Bangalore.

Team A bats first. They make 180 for 6 in their full 20 overs.

Team B begins their chase. After 8 overs, they are 60 for 2 - a slightly behind-par start.

Rain stops play. When play resumes, Team B has 12 overs to face but - because of the time lost - the innings is reduced to 14 overs total.

So Team B has bowled 6 overs left to receive instead of 12. The DLS calculation now kicks in.

Step 1: Calculate Team A's Resources

Team A had a full 20 overs and used them. Resources used by Team A: 100%.

Step 2: Calculate Team B's Resources

Team B had a starting allocation of 100% (20 overs, 0 wickets lost).

After 8 overs and 2 wickets lost, Team B was at the crease with 12 overs and 8 wickets remaining. From the DLS table: this corresponds to roughly 71.6% remaining (illustrative).

After the rain reduction, Team B has only 6 overs remaining (instead of 12), with 8 wickets remaining. From the DLS table: this corresponds to roughly 39.5% remaining.

So Team B has lost 71.6% - 39.5% = 32.1% of resources due to the rain interruption.

Team B's total resources used: 100% - 32.1% = 67.9%.

Step 3: Calculate The Revised Target

The revised target formula:

Revised Target = (Team A score) x (Team B total resources / Team A total resources)

Plugging in:

Revised Target = 180 x (67.9 / 100) = 122.22

The target is rounded up to the next integer, plus one (because Team B needs to score one run more than the par to win):

Revised Target: 123 from 14 overs (which means Team B needs 63 more runs from their remaining 6 overs after their 60 from 8).

Step 4: Verify The Par Score

The DLS "par score" at any point in the chase is the score Team B needs to be at to be exactly even with Team A.

Par at end of over 8 (with 2 wickets lost) before the rain: approximately 51 - 53.

Team B was at 60 for 2, comfortably ahead of par before the rain.

After the rain, the par score recalculates based on the new resources, and the chase continues from that point.

Common Misconceptions

The most common is that DLS "punishes" the chasing team. It does not - the system attempts to adjust both sides' resources fairly. Whether it succeeds in every edge case is debated, but the design is symmetric.

The second is that the rule applies in Tests. It does not - the DLS Method is for limited-overs cricket only.

The third is that the rule is the same as Duckworth-Lewis. It is not - DLS (Duckworth-Lewis-Stern) is the 2014 update, with refinements by Steven Stern that account for very short T20-format situations more accurately.

When DLS Has Decided Big Matches

The 2016 World T20 semi-final between New Zealand and England was DLS-affected. The 2003 World Cup's final stages had multiple DLS calls. The 2007 World Cup final's closing in fading light triggered a DLS-influenced decision.

In the IPL, the 2010 final between CSK and MI was a DLS match; multiple Eliminator and Qualifier matches over the years have been DLS-decided.

For broader IPL context, our IPL points table tracks the current season. Fantasy followers can track related picks via our Dream11 hub. The DLS environment particularly affects high-stakes IPL matches; understanding the system is genuinely useful for fans.

The Critic vs Supporter Case

Critics argue the DLS Method is too opaque - the average fan cannot calculate the revised target without a table. The output is therefore felt rather than understood.

Supporters argue the alternative - earlier rain rules - was much worse. The 1992 World Cup semi-final between South Africa and England, where South Africa needed 22 from 13 balls, then after rain needed 21 from 1 ball, is the case study. DLS removes that kind of result.

The supporter case has held since the rule's 1997 adoption.

FAQ

What does DLS stand for? Duckworth-Lewis-Stern, named after the three statisticians who developed the method.

What replaced the highest-scoring-overs rain rule? The Duckworth-Lewis Method in 1997, refined to DLS in 2014.

Does DLS apply in Tests? No. DLS is for limited-overs cricket only.

Why is the revised target sometimes higher than the original? Because the chasing team has more resources available per over than the original team did, given fewer overs and the same wickets in hand.

Is the calculation manual or automatic? Both - match officials use the published DLS tables, and broadcast graphics typically display the par score live.