Field lacrosse offensive purpose while controlling the ball, the possessing team must keep the ball within the offensive restraining box to avoid a loss-of-possession penalty. Field markings dictate player positioning during a face-off. A face-off is how play is started at the beginning of each quarter and after each goal. During a face-off, there are six players (without considering goalkeepers) in each of the areas defined by the restraining lines. Three midfielders from each team occupy the midfield area, while three attackmen and three of the opposing team's defensemen occupy each offensive area. These players must stay in these areas until possession
Box lacrosse by tall. These nets are significantly smaller than field lacrosse nets which measure wide by tall. A traditional game played under the rules of the Canadian Lacrosse Association consists of three periods of 20 minutes each (similar to ice hockey), with the teams changing ends each period. The NLL plays four 15-minute quarters rather than three periods. If the game is tied at the end of regulation play, a 5-minute overtime (15 in NLL) can be played. Overtime may or may not be sudden victory, depending on the league. Each period, and after each goal scored, play is restarted with