US Lacrosse , the governing body for the sport in the US , clearly states that while holding the stick horizontally , if the ball is placed in the pocket .
Pressure is applied , the top of the ball must remain above the top of the sidewall .
US Lacrosse , the governing body for the sport in the US , clearly states that while holding the stick horizontally , if the ball is placed in the pocket and pressure is applied , the top of the ball must remain above the top of the sidewall .