High Quality Content by WIKIPEDIA articles! The National Lacrosse League (NLL) is the professional league of men`s indoor lacrosse in North America. It currently has 14 teams; 3 in Canada and 11 in the United States. Unlike other lacrosse leagues which play in the summer, the NLL plays its games in the winter. Each year, the playoff teams battle for the Champion`s Cup. A complete summary of the NLL Team-By-Team and Season-By-Season Record Book is defined within the contents of this section.