Cricket overthrow runs can include a boundary allowance plus runs completed before the fielder released the throw. A run still being attempted counts only if the batters had already crossed at that instant. Under MCC's 2026 Laws, however, a misfield that sends the ball over the rope is not automatically an overthrow. The direction and purpose of the fielder's action matter before anyone starts adding runs.
| Question | Answer under MCC Law 19 |
|---|---|
| Relevant provision | Law 19.8, overthrow or wilful act of fielder |
| Timing for runs | The instant of the throw or deliberate act |
| Ordinary misfield | Not automatically an overthrow |
| Boundary from a throw | Normally four, not six |
The source is the official MCC 2017 Code, fourth edition, 2026, particularly Laws 19.7 and 19.8. MCC's accompanying explanation identifies the revisions as changes for October 2026. This guide describes that law book. For a particular international or domestic competition, its own playing conditions also need checking.
What counts as an overthrow in cricket?
Law 19.8.2.1 says an overthrow boundary arises when, in the umpire's opinion, a fielder directs the ball towards the wickets while trying to run out a batter or prevent further runs, and the ball subsequently crosses the boundary. A throw aimed at the stumps that escapes the covering fielders is the straightforward example. The umpire must first identify the qualifying fielding action.
The next provision draws two useful boundaries around that definition. A ball crossing the rope because a fielder was attempting to stop it is not an overthrow. Nor is a short pass to another fielder while fielding near the boundary. Those exceptions stop the extra-run calculation being applied to every unsuccessful piece of boundary fielding.
Imagine a fielder diving at the rope and pushing the ball across while trying to save it. Calling that an overthrow simply because the fielder touched the ball would miss the distinction in the law. The original delivery and the normal boundary provisions must be considered. A missed stop and an inaccurate return towards the wickets are different actions.
How are overthrow runs calculated?
For a qualifying overthrow boundary, Law 19.8.1 adds the boundary allowance, runs completed at the instant of the throw, and the run in progress if the batters had already crossed. Any applicable penalty runs are accounted for as well. The timing reference is the throw, rather than the later moment when the ball reaches the rope.
Take a worked example with no penalties and the normal four-run boundary allowance. The batters have completed one run when the fielder throws. They are attempting a second but have not crossed when the ball leaves the hand. If that throw produces an overthrow boundary, the total is five: the completed run plus four. Completing the second run while the ball travels does not change the earlier timing test.
Now change just one detail. If the batters have already crossed for their second run when the throw is made, that run in progress is included. The same boundary then produces six runs in total. It is six because the calculation is two plus four, not because the fielder's throw has earned a boundary six.
A third example makes the timing clearer. With two runs already completed and the batters crossed for a third at release, the calculation is three plus four, or seven. These are illustrations of the rule, not reports of particular match incidents. Short runs, penalties or other decisions would require their own treatment.
Why a normal boundary uses a different calculation
Law 19.7.3 normally awards whichever is greater: the boundary allowance, or completed runs together with an eligible crossed run at the instant the boundary is scored. It does not ordinarily add those amounts. Law 19.8 is the specific exception that makes an overthrow boundary calculation different. Mixing the two methods is a common route to an incorrect total.
Law 19.7 also explains why a throw sailing over the rope is not automatically six. A boundary six requires a ball struck by the bat that first lands beyond the boundary without having touched the ground inside it. A ball not struck by the bat receives the boundary-four treatment under the stated conditions. Height alone does not decide the allowance.
What does a wilful act mean here?
For this provision, Law 19.8.2.3 defines a wilful act as deliberate fielding action not intended to prevent runs, complete a catch or effect a run out. That is a special legal meaning. A normal throw does not become a wilful act merely because the fielder deliberately moved an arm. The purpose of the action remains part of the assessment.
To follow a decision, ask three questions in order: what fielding action caused the boundary, how many runs were complete at that action, and whether the batters had crossed for another. For related situations, read our guides to run out rules, dead ball decisions and boundary catches.
