What is it called when the feet hit the floor before the ball is released ?
Obstruction typically occurs in three circumstances – when a defender comes between the player with possession and the ball in order to prevent them tackling ; when a defender 's stick comes between the attacker 's stick and the ball or makes contact with the attacker 's stick or body ; and also when blocking the opposition 's attempt to tackle a teammate with the ball ( called " third party obstruction " ) .