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,
Canadian University Field Lacrosse Association Referee-in-Chief. Only current students registered at their respective universities with a full course load are deemed eligible to play in CUFLA competitions. Players who have played professional field lacrosse (such as Major League Lacrosse) are prohibited from playing in CUFLA. However, players who play professional box lacrosse (such as the National Lacrosse League) are eligible to play. Throughout the years, the league has seen many current and former NLL players scattered throughout various teams. Many current and former players have met with a great deal of success representing their countries or playing professional lacrosse in the National Lacrosse League and