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
Lacrosse in Canada and box lacrosse. In 1931, big city hockey promoters introduced "box lacrosse" to turn winter hockey fans into a year-round audience. Box lacrosse was played in a smaller indoor arena space, and competitions could also be held in baseball stadiums, and again, the play was violent. Not enough cities could support teams, however, and the hard times of the Great Depression in the 1930s reduced the number of fans. Entrepreneurs, while failing to make a major commercial success, transformed Canadian amateur lacrosse, making it quite different from field lacrosse as played in the United States, Britain, and Australia. In 1987