If a jack is displaced by an opponent, what is the correct procedure?

When a jack is displaced by an opponent during play, the correct procedure is to move the jack back to its original position and have it re-delivered by the same player. This rule ensures that the integrity of the game is maintained, allowing play to continue according to the established regulations. The act of re-delivering the jack reinforces the concept that the starting point of the game must remain consistent, allowing all players to compete under the same conditions.

In contrast, leaving the jack in its new position would disrupt the intended gameplay, and pausing the game until the jack is replaced does not align with the rules, as the emphasis is on maintaining the flow of the match. Allowing the opponent to choose the placement of the jack would also conflict with standard practices, which prioritize the rights of the player whose turn it is to deliver the jack.