If a teammate of the designated kicker moves forward and kicks the ball into the goal during a penalty kick, what is the restart?

In the scenario where a teammate of the designated kicker moves forward and kicks the ball into the goal during a penalty kick, the correct restart is an indirect free kick for the defenders. This is because the Law of the Game stipulates that only the designated kicker is allowed to play the ball until it is in play, and if any other player (from the attacking team) interferes with this process—particularly by playing the ball before it is in play—a violation occurs.

The restart for this infraction does not favor the attacking team, despite the ball ending up in the goal, because the rules specifically protect the integrity of the penalty kick process. This means that the goal scored under these circumstances is invalid, leading to an indirect free kick awarded to the defending team from the location where the infraction occurred. This upholds the fairness and structure of the game, ensuring that players adhere to the designated roles during set plays.