GMCL Rules Tabs - G18 - D/L/S for rain affected matches

GMCL Rules Reviewed & Updated February 2024

	SECTION G - WEATHER AFFECTED MATCHES
G (a)	This section of the rules gives details on what to do when the weather intervenes in your game
18.	Duckworth Lewis Stern (D/L/S) scoring for weather interrupted matches
18 (a)	This section of the rules looks at how the Duckworth Lewis Stern method helps determine results in rain affected matches in GMCL competition

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18. What is D/L/S scoring for weather interrupted matches?

GMCL Rules Reviewed & Updated February 2024

	18.1.	What is D/L/S?
	18.1.1.	D/L/S is a system used in cricket to determine a result to games affected by weather
	18.1.1.1.	Duckworth Lewis Stern (D/L/S) is an internationally approved method to determine a result in a weather affected limited over cricket match, based on resources available against runs required and generally considered an accurate way of testing both sides
	18.1.1.2.	D/L/S takes into account
	18.1.1.2.1.	how many overs have been used up,
	18.1.1.2.2.	how many wickets have been lost and
	18.1.1.2.3.	also adds different weighting values to overs at different part of the innings
	18.1.1.3.	The professional version of D/L/S is built in to the cricHQ app and any third party D/L/S calculation system should not be used.
	18.1.2.	D/L/S is made up of two elements (This section updated Winter 23/24)
	18.1.2.1.	A D/L/S Revised Target will be calculated for the team batting second to chase
	18.1.2.1.1.	Where overs are lost during either innings after the start of the match
	18.1.2.2.	The D/L/S Par score comes into play.
	18.1.2.2.1.	Where the second innings comes to an early end due to bad weather or bad light after the Minimum Overs for the competition or more have been played.

There is more on the practical use of DLS here https://www.gtrmcrcricket.co.uk/pages/dls

18.2. How does D/L/S work?

GMCL Rules Reviewed & Updated February 2024

	18.2.	How does D/L/S work?
	18.2.1.	D/L/S Revised Target (This section updated Winter 23/24)
	18.2.1.1.	Overs Lost during the first innings
	18.2.1.1.1.	After the start of the game (or application of the Grace Period if it applies to the match in question),where weather interrupts the first innings on one or more occasions AND overs are lost, D/L/S will provide a revised target for the team batting second at the start of the second innings.
	18.2.1.1.2.	Each break in play and the overs lost must be recorded on the scoring app at the resumption after each break in order that the revised target is calculated correctly.
	18.2.1.1.3.	The Revised Target will be shown on the cricHQ App when restart is activated after the break between innings.
	18.2.1.1.4.	The revised target will be a whole number and may be higher or lower than or equal to the first innings score.
	18.2.1.2.	Overs Lost during the second innings
	18.2.1.2.1.	If overs are lost during the second innings the Revised Target for the second inning after resumption of play and shown on the scoring app.
	18.2.1.3.	Displaying the Revised Target on the scoreboard
	18.2.1.3.1.	The D/L/S Revised Target must be posted on the scoreboard throughout the second innings and updated after any further delay.
	18.2.1.4.	To win the game the side batting second needs only to equal the Revised Target.
	18.2.1.4.1.	Scoring one less than the Revised Target creates a Tie
	18.2.2.	D/L/S Par Score
	18.2.2.1.	A “Par Score” will be shown on the cricHQ app after every ball bowled in the second innings.
	18.2.2.1.1.	The Par Score will only come into play if the game ends abruptly due to weather or bad light.
	18.2.2.1.2..	The Par Score should be updated after every ball on electronic scoreboards linked to the app or updated at the end of the over on traditional scoreboards.
	18.2.2.1.3.	The Par Score should be
	18.2.2.2.	What is the Par score?
	18.2.2.2.1.	The Par Score will be a whole number and is calculated to reflect where a team should be with the number of balls used from the number available and from the number of wickets lost to be on target to meet the score needed.
	18.2.2.3.	How is Par Score used?
	18.2.2.3.1.	To determine the result, the actual score and the par score are compared after the outcome of the last ball bowled has been entered into the cricHQ App.
	18.2.2.3.2.	At the point of an abrupt ending, a 2nd innings score (after more than the minimum overs have been faced) above par is a win for the team batting second, equal to par is a tie, below par is a loss for the team batting second.
	18.2.2.4.	The benefit to both sides is that they can see the trend in where they stand as the Par score changes after each ball or each over
	18.2.2.4.1.	but remember that the actual comparison for a result can only be made after the last ball is bowled and not the par at the end of the previous over
	18.2.3.	D/L/S examples
	18.2.3.1.	These are for guidance only and not to be used in games
	18.2.3.1.1.	Where Team A batting first has innings ended at 25 overs when they are 100 for 2
	18.2.3.1.1.1.	They have lost all of their potential highest scoring overs at the end of their innings with lots of wickets available
	18.2.3.1.1.2.	Team B batting second will be chasing a Revised Target over 160 if they have 25 overs
	18.2.3.1.2.	Where Team A batting first has innings ended at 25 overs when they are 100 for 8
	18.2.3.1.2.1.	They have lost all of their highest scoring overs but also lost most of their wickets.
	18.2.3.1.2.2.	The side batting second will only be chasing a Revised Target of around 80 if they have 25 overs
	18.2.3.1.2.3.	This seems low but after batting poorly, Team A have to bowl better than their opponents to win.
	18.2.3.1.3.	Where Team A batting first scores 175-6 off 50 overs and Team B only has 30 overs after a delay in the restart.
	18.2.3.1.3.1.	Team B batting second will be chasing a Revised Target around 130 off 30 overs, the wickets lost in the first innings have little impact on this calculation
	18.2.3.1.4.	Where Team A batting first scores 175-6 off 50 overs and Team B bats 10 overs scoring 50-3 but then lose 20 overs and only has 20 overs available after the restart.
	18.2.3.1.4.1.	Team B batting second will be chasing a Revised Target of around 140 off their 30 overs, the wickets lost in the first innings have little impact on this calculation
	18.2.3.1.4.2.	The target is higher because of the early loss of wickets at the start of the 2nd innings.
	18.2.3.1.5.	Where Team A batting first scores 175-6 off 50 overs and Team B bats 30 overs scoring 125-3 but then the game is rained off.
	18.2.3.1.5.1.	With 3 wickets lost the DLS Par off Team B's 30 overs is 89-3 so they needed 90 to win, so Team B win.
	18.2.3.1.6.	Where Team A batting first scores 175 -6 off 50 overs and Team B bats 30 overs scoring 125-7 but then the game is rained off.
	18.2.3.1.6.1.	With 7 wickets lost the DLS Par off Team B's 30 overs is 137-7 so they needed 138 to win, so Team A win.

18.3. How is D/L/S operated?

GMCL Rules Reviewed & Updated February 2024

	18.3.	How is D/L/S operated?
	18.3.1.	Scorer Requirements
	18.3.1.1.	D/L/S relies on the scorer correctly entering all match delays and interruptions and accurately recording the game scores.
	18.3.1.1.1.	If the scorers do not correctly record interruptions at any point of the game for any interruption, the Revised Targets and Par Score will be wrong.
	18.3.1.1.2.	It is imperative that the Umpires communicate with scorers to verify overs lost and check that the scoring app has been updated before every restart.
	18.3.2.	Scoreboard requirements
	18.3.2.1.	A Revised Target must be displayed on the scoreboard as soon as it comes in to play.
	18.3.2.1.1.	We recommend that all clubs, whether they have electronic scoreboards, flip numbers or tins look for solutions around their own scoreboard functionality to display “Revised Target” alongside the first innings score and be ready to amend this should overs be lost.
	18.3.2.2.	Where the “Par Score” is likely to be relevant (in that weather is threatening and so the game may come to an abrupt end) or the umpires or batter request it,
	18.3.2.2.1.	all clubs must be able to share the D/L/S Par at the end of each over on the scoreboard (or the ultimate solution to display it after each ball).

GMCL Rules Tabs - G18 - D/L/S for rain affected matches

18.1.

What is D/L/S?

18.1.1.

D/L/S is a system used in cricket to determine a result to games affected by weather

18.1.2.

D/L/S is made up of two elements (This section updated Winter 23/24)

18.2.

How does D/L/S work?

18.2.1.

D/L/S Revised Target

(This section updated Winter 23/24)

18.2.1.1.1.

After the start of the game (or application of the Grace Period if it applies to the match in question),where weather interrupts the first innings on one or more occasions AND overs are lost, D/L/S will provide a revised target for the team batting second at the start of the second innings.

18.2.1.1.2.

Each break in play and the overs lost must be recorded on the scoring app at the resumption after each break in order that the revised target is calculated correctly.

18.2.1.2.1.

If overs are lost during the second innings the Revised Target for the second inning after resumption of play and shown on the scoring app.

18.2.1.3.1.

The D/L/S Revised Target must be posted on the scoreboard throughout the second innings and updated after any further delay.

18.2.2.

D/L/S Par Score

18.2.2.1.1.

The Par Score will only come into play if the game ends abruptly due to weather or bad light.

18.2.2.2.1.

The Par Score will be a whole number and is calculated to reflect where a team should be with the number of balls used from the number available and from the number of wickets lost to be on target to meet the score needed.

18.2.2.3.

How is Par Score used?

18.2.3.

D/L/S examples

18.3.

How is D/L/S operated?

18.3.1.

Scorer Requirements

18.3.2.

Scoreboard requirements

D/L/S is made up of two elements
(This section updated Winter 23/24)