Count a boundary overthrow from the throw.

The law used on this page

The controlling source is Marylebone Cricket Club Law 19.8, “Overthrow or wilful act of fielder,” in the 2017 Code, 3rd Edition (2022). Laws 18.1, 18.4, 18.10 and 18.12 supply the connected rules for completing runs, short runs, score attribution and the batters' ends.

MCC's published 4th Edition does not take effect until 1 October 2026. Its new definitions are explained separately below and are not used to rewrite a ruling made under the law still effective in August 2026. A competition's appointed playing conditions can modify the MCC baseline, so those conditions control if they differ.

An overthrow is not a fixed run award

A poor throw does not automatically add four, five or any other preset number. If the ball remains inside the boundary, it remains live until it becomes dead under Law 20; the batters may keep running and legally completed runs are counted in the ordinary way.

The special arithmetic in Law 19.8 is triggered only when a boundary results from the overthrow or a fielder's wilful act. The boundary makes the ball dead, and the law then uses the earlier throw-or-act snapshot to settle the score.

Build the total in four parts

1. Penalty runs: include any that the Laws allow to stand.
2. Boundary allowance: normally four under Law 19.6.2, although Law 19.6.1 allows a different allowance to be agreed before the toss.
3. Completed runs: count the runs legally completed by the instant of the throw or wilful act.
4. Run in progress: add it only if the batters had crossed before that instant.

Do not add runs completed after the release as separate runs. Once Law 19.8 applies, the release-time snapshot supplies the running component even if the pair finish or begin more runs while the ball travels to the rope.

Both batters must make good their ground

Under MCC Law 18.1.1, a run is completed when the batters have crossed and made good their ground from end to end while the ball is in play. Merely setting off, crossing, or sliding toward the crease does not make that run completed.

Crossing still matters for the one run in progress at the throw. It is a separate test: completed runs are counted first, then the current run is added if the pair had already crossed. Replay analysis therefore needs the release frame, the completed-run count at that frame, and whether the batters had passed each other.

How to rule the play

1. Name the fielding act. Decide whether the eventual boundary resulted from an overthrow or wilful act for Law 19.8, rather than an ordinary boundary under Law 19.7.
2. Freeze the throw or act. Do not use the later boundary frame.
3. Count valid completed runs. Exclude any run that the Laws disallow, including a called short run.
4. Check the current run. Add one only if the batters had crossed at the frozen instant.
5. Add the allowance and penalties. The allowance is normally four; applicable Penalty runs remain separate.
6. Place the batters. Apply Law 18.12.2 from the instant of the throw or act.
7. Credit the score correctly. Decide whether the runs go to the striker or to the relevant category of extras under Law 18.10.

One complete, crossed on the second

Situation: the batters complete one run. During their second, they cross before a fielder releases a throw at the wicket. The throw reaches a boundary carrying the normal four-run allowance. No Penalty runs apply.

MCC 2022 ruling: six runs: four for the boundary, one completed before the throw, and one for the run in progress because the batters had crossed. The decisive facts are the one completed run and the crossing at release.

One complete, not crossed on the second

Situation: one run is complete, but the pair have not crossed on their second when the throw is released. They cross and reach their creases before the ball reaches the rope.

MCC 2022 ruling: five runs: the four-run allowance plus the one completed at release. The later crossing and completion do not add another run because Law 19.8 fixes the running calculation at the throw.

The throw is recovered inside the field

Situation: a fielder throws past the wicket, another fielder retrieves the ball before it reaches the boundary, and the batters complete two further runs before play ends.

MCC 2022 ruling: Law 19.8's boundary formula is not engaged. Count the runs legally completed while the ball remains in play, subject to the ordinary dead-ball, dismissal and short-run provisions. “Overthrow” does not itself mean four extra runs.

A short run is not rescued by the boundary

MCC Law 18.4.2 usually tells an umpire to disregard an unintentional short run when a boundary is scored. It expressly preserves the Short run call, however, when that boundary results from an overthrow or wilful act under Law 19.8.

Accordingly, the “completed runs” component means valid scoring runs, not every shuttle the batters appeared to finish. Deliberate short running has the more serious consequences in Law 18.5 and cannot be treated as ordinary overthrow arithmetic.

The final total does not decide who faces

Law 19.8 applies Law 18.12.2 from the instant of the throw or act. If the batters had not crossed during the run then in progress, each returns to the wicket just left; if they had crossed, they continue to the opposite wickets. The even four-run allowance does not independently swap them.

This is why five or six runs on the scoreboard is not a safe shortcut for deciding the next striker. The crossing position at the throw settles the ends under this law; the end of the over may then affect who receives the next delivery in the usual way.

“Overthrows” are not automatically extras

MCC Law 18.10 controls attribution. If the striker hit the ball with the bat, the runs are credited to the striker, apart from a five-run Penalty award and the one-run No ball penalty. If the ball was not struck by the bat, the total is recorded as the applicable Penalty runs, Byes, Leg byes, No ball extras or Wides.

The television label “four overthrows” therefore describes how the ball reached the boundary, not necessarily the scorebook category. The original delivery and contact with the bat determine the credit.

Accidental contact does not cancel the throw

If a throw at the wicket accidentally strikes a running batter or the batter's bat and then reaches the boundary, the boundary can still result from the overthrow. Apply Law 19.8 from the original throw, not from the deflection.

Intent matters separately. MCC Law 37.2 says accidental obstruction does not make a batter out Obstructing the field, while Law 37.1 covers a wilful attempt to obstruct or distract the fielding side. If the umpire finds deliberate obstruction and an appeal produces a dismissal, Law 37.5 supplies different run-scoring consequences.

The new edition defines overthrow and misfield

MCC's 2017 Code, 4th Edition (2026) takes effect on 1 October 2026. New Law 19.8.2.1 defines an overthrow as a fielder directing the ball toward the wickets, in an attempt to run out a batter or prevent further run-scoring, after which the ball crosses the boundary.

New Law 19.8.2.2 says it is not an overthrow when the boundary results from an attempt to stop the ball, or when a fielder near the boundary tries to pass it a short distance to another fielder. Those are treated under the ordinary boundary calculation in Law 19.7: generally the greater of the allowance or the completed runs plus a crossed run measured when the boundary is scored, rather than allowance plus running.

For Law 19.8 only, new 19.8.2.3 defines a wilful act as a deliberate fielder action not intended to prevent runs, effect a Run out or complete a catch. The scoring formula for a true overthrow remains the allowance plus the release-time running and applicable penalties. What changes is the formal classification, removing an ambiguity in the 2022 text.

Check the date-specific playing conditions

The ICC Men's Test Match Playing Conditions effective June 2025 and the ICC Men's T20 World Cup 2026 Playing Conditions reproduce the current Law 19.8 calculation. The ICC Board announced that all remaining MCC 2026 Law changes will be adopted from 1 October 2026.

For an international match before or after that transition, use the playing conditions appointed to that match rather than assuming the publication date of the MCC book alone controls. Domestic boards, leagues and age-grade competitions can also issue their own playing conditions.

The umpire can refer the run count

Under Appendix D, paragraph 2.3.1.4 of the ICC Men's Test Match Playing Conditions effective June 2025, the bowler's-end umpire may refer to the third umpire the number of runs scored when a boundary results from an overthrow or wilful act. The boundary decision must be made immediately and cannot later be changed under paragraph 2.3.2.

This is an Umpire Review, not a player DRS review. Appendix D limits Player Reviews to decisions about whether a batter is dismissed, so a team cannot spend a review merely to challenge the overthrow total.

Five shortcuts that give the wrong answer

• “An overthrow boundary is always five.” It can be four plus zero, one or more completed/crossed runs, plus applicable penalties.
• “Count when the ball touches the rope.” Law 19.8 uses the instant of the throw or wilful act.
• “Runs finished after release also count.” Not as additional runs once the boundary-overthrow formula applies.
• “Every fielding mistake is an overthrow.” The current text requires an umpiring classification; from 1 October 2026, MCC expressly excludes specified misfields.
• “Overthrows always go in extras.” Law 18.10 bases credit on how the delivery was played.

Governing-body sources and effective versions

• MCC — Laws of Cricket 2017 Code, 3rd Edition (2022), Law 19: Boundaries, especially 19.6–19.8
• MCC — Laws of Cricket 2017 Code, 3rd Edition (2022), Law 18: Scoring runs, especially 18.1, 18.4 and 18.10–18.12
• MCC — Laws of Cricket 2017 Code, 3rd Edition (2022), Law 37: Obstructing the field
• MCC — announcement of the 4th Edition's 1 October 2026 effective date
• MCC — Laws of Cricket 2017 Code, 4th Edition (2026), future Law 19.8.1–19.8.2
• ICC — Men's Test Match Playing Conditions, effective June 2025, clauses 18–19 and Appendix D 2.3
• ICC — Men's T20 World Cup 2026 Playing Conditions, clauses 18–19
• ICC — Board meeting release confirming adoption of remaining MCC changes from 1 October 2026

Checked on 26 August 2026 against the MCC 2022 law still in force, MCC's published 2026 edition and effective-date notice, and current ICC material. Competition playing conditions may supplement or replace the MCC baseline and should be checked for the match concerned.