How the umpire checks it
- Identify whether the fielding side made a throw or attempted run-out that caused the overthrow.
- Check where the batters had reached when that throw left the fielder's hand.
- Decide which run was already in progress at that moment.
- If the ball then reaches the boundary, add the boundary allowance to the runs already earned under the law.
- Confirm the final score and the striker/non-striker positions for the next ball.