Note: for games featuring more sensitive players, it may be acceptable, instead of pegging a player who is open to get them out, to throw the ball at the wall before the player "tags up" (touches the wall). The no-pegging rule must be stated before the game begins. If someone is pegged with the ball when the no-pegging rule is in effect, then it would be the same as if the player had simply missed the wall on the return and they must touch the wall.
