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
Field lacrosse between a Canadian All-star team and the United States. The United States was represented by Johns Hopkins Blue Jays lacrosse in both the 1928 and 1932 Olympics. In order to qualify, the Blue Jays won tournaments in the Olympic years to represent the United States. The 1948 games featured an exhibition by an "All-England" team organized by the English Lacrosse Union and the collegiate lacrosse team from Rensselaer Polytechnic Institute representing the United States. This exhibition ended in a 5–5 tie. There are obstacles to reestablishing lacrosse as an Olympic sport. One hurdle was resolved in 2008, when the international