Box lacrosse is typically penalized with expulsion and suspensions. In 1990, when the Six Nations created the new Mohawk lacrosse league, fighting was specifically targeted as unacceptable. Violators were ejected from the game in which the altercation occurred and given a minimum three game suspension. Box lacrosse is the most popular version of the sport in the Czech Republic. It is also played to a marginal degree in Australia, primarily by players who have played field lacrosse. Club level box lacrosse leagues in the United States have increased the number of players exposed to the sport, including the: Baltimore Indoor Lacrosse League,
Box lacrosse (Senior B national championship) the Founders Cup (Junior B national championship) all under box lacrosse rules. Briefly in 1939, a professional box lacrosse league started up in California, called the "Pacific Coast Lacrosse Association". This four team league also folded shortly after opening. Professional box lacrosse did not return to the United States again until 1968 when the Portland Adanacs and Detroit Olympics franchises played in the National Lacrosse Association, a circuit that folded after one summer season. A new professional indoor lacrosse league was created in the 1970s with the formation of the original National Lacrosse League. This league