The women's lacrosse game saw numerous rule changes in 2000. Modifications included limiting the number of players allowed between the two restraining lines on the draw to five players per team. Stick modifications have led to offset heads, which allow the women's game to move faster and makes stick moves and tricks easier. The stick is now more similar to the men's stick, with a deeper pocket and more rounded head. In 2002, goggles became mandatory equipment in the United States (but not a requirement in international rules). In 2006, hard boundaries were adopted. Prior to hard boundaries, umpires stopped play when the action moved too far away. Passes that were thrown out of bounds would be awarded to the team closest to the ball. After this rule change, balls lost out of bounds became turnovers, except on a shot. There are calls, such as shooting space which is when a defender runs directly up to the player about to shoot. To avoid this call, the defender must run up at an angle to the player about to shoot. This rule is to keep the players safe.