What occurs when two players clash heads during a fair attempt to play a high ball?

When two players clash heads during a fair attempt to play a high ball, the referee stops the game for treatment. This is crucial for the safety of the players involved, as head collisions can lead to serious injuries, including concussions. Stopping the game allows medical personnel to assess the players and provide immediate care if necessary.

The decision to halt play reflects the game's emphasis on player safety. Even if the clash was fair and unintentional, the potential risks associated with head injuries warrant a pause in the match. This ensures that both players receive appropriate attention before the game can resume.

In contrast, the game continuing without interruption would not prioritize player safety, a penalty kick being awarded would be inappropriate given the nature of the incident, and showing a card implies an infraction or misconduct, which does not apply in this context as the clash was a fair attempt to play the ball.