If a jack is deflected by the marker, what should happen?

When a jack is deflected by the marker, the correct action is to return the jack to its original position and re-deliver it. The rules of bowls state that the jack must remain in play only if it has not been influenced by any external factors. Since the marker's deflection is considered an interruption to the natural course of play, the jack's original position must be reinstated to ensure that the game proceeds fairly and accurately.

Returning the jack to its starting point maintains the integrity of the gameplay, allowing teams to continue competing under the same conditions as before the interference occurred. Such procedures are standardized to prevent inconsistencies and ensure all players' actions align with the established rules of the game. By re-delivering the jack, it allows for a fair opportunity for all players to aim accurately without the influence of the marker's position change.