The DLS Method (Duckworth-Lewis-Stern) is a mathematical formula used in cricket to calculate a fair revised target for the team batting second when a match is interrupted by rain or bad weather. It considers two resources — overs remaining and wickets in hand — to set an adjusted target that is equally challenging as the original one.
You're watching a thrilling India vs Pakistan T20 match. India has just posted 185 runs. Pakistan needs 30 off the last 3 overs — and then, suddenly, the rain comes pouring down. Play is stopped. When the players come back, a new, adjusted target flashes on the screen: Pakistan now needs 18 off 2 overs.
How did that number appear? Who calculated it? Is it fair? The answer to all three questions is the DLS Method — one of cricket's most important but least understood concepts.
In this guide, we break down the DLS Method in cricket in the simplest possible way — no maths degree required. By the end, you'll understand exactly how it works, why it exists, and how it affects every rain-interrupted match you watch.
What is the DLS Method in Cricket?
Duckworth — Lewis — Stern Method
The DLS Method, which stands for Duckworth-Lewis-Stern Method, is the official mathematical formula used by the International Cricket Council (ICC) to recalculate a fair target score in limited-overs cricket matches (ODIs and T20s) when play is interrupted by rain, bad light, or any other unavoidable circumstances.
In simple terms: if rain cuts an innings short, the DLS method tells you exactly how many runs the chasing team needs to win — in a way that's mathematically fair to both sides.
History of DLS Method — Who Invented It and Why?
Before DLS existed, cricket used two very flawed systems to handle rain interruptions. Both caused serious injustice to teams — and one created one of the most infamous moments in World Cup history.
The 1992 World Cup Disaster — Why DLS Was Needed
In the 1992 Cricket World Cup semi-final, South Africa were chasing England's target. South Africa needed 22 runs off 13 balls — a tough but achievable task. Then rain arrived. When play resumed with just 1 ball left, the old "Most Productive Overs" method gave South Africa a revised target of 21 runs off 1 ball — a literally impossible task. South Africa were effectively eliminated by rain, not by England. The cricket world was outraged.
The Birth of the DLS Method — A Timeline
How Does the DLS Method Work? Simple Explanation
The core idea behind DLS is beautifully logical once you understand it. It boils down to one key concept: "Resources."
The Concept of "Resources" in Cricket
At the start of any cricket innings, every team has exactly two resources available to score runs:
Resource 1: Overs
In an ODI, a team starts with 50 overs. In a T20, they have 20 overs. Every over lost to rain reduces this resource.
Resource 2: Wickets
Every team starts with 10 wickets. The more wickets you have in hand, the more aggressively you can bat — a hugely valuable resource.
At the start of an innings: 50 overs remaining + 10 wickets in hand = 100% resources available.
When rain interrupts a match and overs are lost, one team's resources are reduced. The DLS method calculates how much resource each team had, and adjusts the target accordingly to make sure both teams faced an equally difficult challenge.
DLS Method Formula — How is the Target Calculated?
The full DLS formula used by the ICC in professional matches is kept confidential and runs on specialist ICC software. However, the basic version that explains how it works is:
This compares the resource percentage available to each team and adjusts the target proportionally
What Are "Resources" as a Percentage?
The ICC publishes a DLS Resource Table — a chart that converts every possible combination of overs remaining and wickets lost into a resource percentage. Here are some examples from the table:
| Overs Remaining | Wickets Lost | Resources Remaining (%) | Meaning |
|---|---|---|---|
| 50 | 0 | 100% | Full innings, all wickets intact — maximum resources |
| 40 | 0 | 89.3% | 10 overs lost but all wickets — still very strong |
| 30 | 0 | 75.1% | 20 overs lost, still 10 wickets — can attack aggressively |
| 25 | 5 | 38.6% | Halfway through, 5 wickets down — seriously reduced |
| 10 | 5 | 19.7% | Death overs, team well-set — moderate resources |
| 5 | 9 | 4.7% | Last over, last wicket — almost nothing left |
The DLS software instantly looks up these percentages and calculates the revised target. Match officials enter the details into an ICC-certified computer and the target is set within seconds.
DLS Method Examples — 3 Real-Life Scenarios Explained
The DLS method handles three different types of rain interruptions. Let's walk through each one with a simple example you can follow easily.
Situation: India bats first in an ODI and scores 280 in 50 overs. Before Pakistan even starts batting, rain reduces the match to 40 overs.
How DLS works: India had 100% resources (50 overs, 10 wickets). Pakistan now has only 40 overs available (10 wickets still intact). From the DLS table, 40 overs + 0 wickets lost = 89.3% resources. DLS adjusts the target: 280 × (89.3% ÷ 100%) = 250 runs. But since Pakistan has fewer overs but more "aggression potential," the target is typically set slightly higher than simple proportion — the ICC software handles this precisely.
Situation: India scored 180 in a T20. Pakistan is chasing and at 90/2 in 12 overs — rain stops play. When play resumes, only 5 more overs are possible (17 total instead of 20).
How DLS works: Pakistan had resources for 20 overs with 8 wickets remaining. After rain, they only have resources for 5 overs with 8 wickets remaining. The reduction in resources is calculated, and the target is adjusted downward to reflect what Pakistan could have scored with full resources. The DLS system calculates a "par score" — if Pakistan's actual score exceeds the par score at the rain interruption, Pakistan is winning. If not, India leads.
Situation: Pakistan is chasing 180. At 100/3 after 12 overs, rain comes and the match is abandoned — no more play possible.
How DLS works: The DLS par score at the moment of abandonment is calculated. If Pakistan's score (100) is equal to or greater than the DLS par score at that moment, Pakistan wins. If they are below par, India wins. If exactly equal, it's a tie.
Famous Matches Decided by the DLS Method
Gujarat Titans scored 214/4 in 20 overs. CSK had scored 4/0 in just 3 balls when rain interrupted. Under DLS, CSK's revised target was set at 171 from 15 overs. CSK reached 171/5 in exactly 15 overs, winning the IPL 2023 title by the DLS method — a perfect example of the method deciding cricket's biggest prize.
The Duckworth-Lewis method was officially adopted by the ICC in 1999 and used in that year's World Cup — the first time a mathematically fair rain rule was applied globally at cricket's biggest stage.
The very first match ever decided by the Duckworth-Lewis method was Zimbabwe vs England in 1996-97. Zimbabwe won by 7 runs under the new calculation — history in the making.
India beat Pakistan by just 2 runs under the DLS method in the 2025 Hong Kong Sixes — a testament to how the system works perfectly even in ultra-short formats, deciding a match by the narrowest possible margin.
DLS Method vs Old Methods — Why DLS is Better
| Method | Used When | Considered Wickets? | Fair? |
|---|---|---|---|
| Average Run Rate (ARR) | 1950s–1991 | ❌ No | Often Unfair |
| Most Productive Overs (MPO) | 1992 World Cup | ❌ No | Very Unfair |
| DLS Method | 1999–Present | ✅ Yes | Most Fair Available |
Studies show that the DLS method correctly predicts the eventual winner of a rain-interrupted match 75–85% of the time — significantly better than any alternative. It is the global standard for a reason.
DLS Method in T20 vs ODI Cricket — Is it Different?
The DLS method is used in both T20 cricket and ODI cricket, but with different underlying resource tables to reflect the different nature of each format.
DLS in T20 Cricket
T20 cricket is much more explosive — teams score faster, death overs are more valuable, and a single over can change everything. Professor Steven Stern updated the DLS formula specifically to account for modern T20 scoring patterns when he became the method's custodian in 2014. The ICC updates the DLS model every year on July 1 to reflect the latest scoring trends.
DLS in T20 vs ODI — Key Differences
| Factor | ODI (50 overs) | T20 (20 overs) |
|---|---|---|
| Minimum overs for result | 20 overs per side | 5 overs per side |
| Starting resources | 100% (50 overs + 10 wickets) | 100% (20 overs + 10 wickets) |
| Resource table used | Standard/Professional Edition | Same ICC software, T20-calibrated table |
| Impact of one big over | Moderate | Very high — can shift resources significantly |
What is the DLS Par Score? How to Know Who is Winning
When rain interrupts a match during Team 2's innings, you'll often see apps like Cricbuzz and ESPNcricinfo showing a "Par Score" next to the live scorecard. This is the DLS par score.
During rain-affected matches, captains now play "DLS-aware cricket" — they know whether their team is above or below the par score at every moment, and accelerate or consolidate accordingly. This has added a new tactical dimension to limited-overs cricket.
Criticisms of the DLS Method — Is it Always Fair?
No system is perfect, and DLS has its share of critics. Here are the most common complaints — and why they often misunderstand the method:
"The target went up even though overs were reduced!"
This happens when rain interrupts Team 1's innings. If Team 1 had already scored rapidly but lost their most productive overs (where they would have scored the most) to rain, Team 2's target may be higher than Team 1's actual score. This is mathematically correct — Team 2 had a better situation than Team 1 did at the same stage.
"It's too complicated to understand"
This is the most valid criticism. DLS is not easy to explain to a casual fan in real time. However, apps like Cricbuzz, ESPNcricinfo and the ICC's official platforms now show the par score live, making it much easier to follow who is winning at any moment.
"It doesn't suit T20s perfectly"
This was a genuine problem with the original Duckworth-Lewis method. Professor Stern's 2014 update specifically addressed this. The current DLS model is updated annually and performs significantly better for T20 cricket than the original formula.
How to Check DLS Target Live During a Match?
You don't need to calculate anything yourself. Here's how to instantly check the DLS target or par score during any live rain-affected match:
| Method | How to Use |
|---|---|
| Cricbuzz App | Open the live match scorecard — the par score and required runs are shown automatically during rain interruptions |
| ESPNcricinfo | Live scorecard shows DLS target and par score with ball-by-ball updates |
| ICC Official App | Official DLS figures shown in all ICC-sanctioned matches |
| TV Broadcast | All cricket broadcasters (JioHotstar, Star Sports, Sky Sports) display the DLS target on screen during rain breaks |
| Online DLS Calculator | Free tools are available online for practice calculations — search "DLS calculator cricket" to find them |
DLS Method — 10 Quick Facts Every Cricket Fan Must Know
| # | Quick Fact |
|---|---|
| 1 | DLS stands for Duckworth-Lewis-Stern — named after the three statisticians who developed it |
| 2 | It was first used in 1997 and officially adopted by the ICC in 1999 |
| 3 | It is used in all ICC matches — ODIs, T20Is, World Cups, Champions Trophy and major domestic leagues including the IPL |
| 4 | The formula considers overs remaining AND wickets in hand — not just overs like the old methods |
| 5 | A team with fewer overs but all 10 wickets intact has MORE effective resources than the same team at the start of a full 50-over innings |
| 6 | The DLS formula is updated by the ICC every July 1 each year to match modern scoring trends |
| 7 | The minimum overs for a DLS result is 5 overs per side in T20 and 20 overs per side in ODIs |
| 8 | If a match is abandoned mid-innings, the team ahead of the par score at that moment is declared the winner |
| 9 | In rare cases, DLS can set a target higher than the first team's score — this is mathematically correct, not an error |
| 10 | The full DLS Professional Edition software is confidential and owned by the ICC — only licensed officials use it during matches |
Frequently Asked Questions — DLS Method in Cricket
Conclusion — DLS Method Makes Rain-Affected Cricket Fairer
The DLS Method is far from perfect — no mathematical formula can fully capture the unpredictable drama of cricket. But it is, without doubt, the fairest and most scientifically robust rain rule cricket has ever had.
By considering both overs remaining and wickets in hand — the two true resources of a batting team — DLS creates revised targets that genuinely reflect the match situation. It ended the era of absurd results like 21 off 1 ball, replaced guesswork with mathematics, and has been trusted by the ICC for over 25 years across thousands of international matches.
The next time rain arrives mid-match and the commentators announce a revised DLS target, you'll know exactly how that number was calculated — and more importantly, whether it's fair. It almost certainly is.