The majority of fouls are committed when a defender initially makes contact with the player rather than the ball. This also applies to a player who handles the ball; depending on the judgement of the referee, the offender may face further punishment (yellow or red card). The indirect free kick, like the direct free kick, restarts play. The only exception is if the player who commits the foul attempts to get back into play by kicking or punching the opposing player; in this case, they will be sent off and a replacement player will be awarded the ball via the corner flag. Fouls can also occur in other ways, for example, if a player enters the field of play without the permission of the referee. The latter may call him or her over to indicate what action needs taking. If the player does not comply with this request, then he has committed a serious offense and should be shown a yellow card. In this case, the referee may choose to send him off the field immediately or wait until the end of the game. If a player is shown a second yellow card, then he will be dismissed from the match and a substitute will be brought onto the field. A final way in which players can be penalized is if they use or throw any type of weapon or object at another person. This includes fists, feet, heads, knees, teeth, balls, etc.