Box lacrosse The roots of indoor lacrosse are obscure, but its invention has been attributed to one Paddy Brennan, a field lacrosse player and referee from Montreal, who, being annoyed by the constant slowing of play from balls going out of bounds in the field game, experimented with indoor games at the Mount Royal Arena during the early 1920s. Joseph Cattarinich and Leo Dandurand, owners of the National Hockey League's Montreal Canadiens in the 1920s, led the participating ice hockey arena owners to introduce the new sport. In the 1930s, 6 v 6 indoor lacrosse came to be played in the summer
Goaltender (box lacrosse) on the floor. Such a play is called a "crease dive". Occasionally, a box lacrosse goaltender will run up and join the play in the offensive zone on a slow whistle or delayed penalty, but the goaltender is usually pulled and substituted with a field player. Goaltenders in box lacrosse are known to sometimes score goals for their team, in power play or slow whistle situations. Also, due to the unique lack of offside rules in box lacrosse, it is not unheard of to see a goaltender lead his team in scoring on game sheets through multiple assists, usually through