A game misconduct penalty is usually issued against a player for unsportsmanlike play, escalating a fight, or leaving the penalty box before he has completed serving time for another penalty, although some major penalties carry an automatic game misconduct. If a player incurs three game misconducts in a season, he or she will be given a one-match ban. The player must leave the ice immediately, and a substitute may take over. However, if any other penalties are incurred by the ejected player in the same incident, they must be served in the penalty box by the substituting player. By the USA Hockey rules, a player can receive a game misconduct for violently checking an opponent into the boards from behind, or if the opponent's head strikes the boards or the goal frame as a result of the check from behind. It is also common knowledge that a player receives a game misconduct, regardless of the force of the hit, the second time (s)he checks an opponent from behind. A referee signals a misconduct penalty by tapping his hands on his hips several times.