Major League Lacrosse (MLL), the premier professional outdoor lacrosse league, was founded by Jake Steinfeld and is headquartered in Boston, Massachusetts. Major League Lacrosse commenced play in June of 2001 and will enter its fifteenth season in 2015. MLL has continued to lead the sport of lacrosse into the mainstream of competitive team sports. The league is made up of eight teams: The Boston Cannons, Charlotte Hounds, Chesapeake Bayhawks, Denver Outlaws, Florida Launch, New York Lizards, Ohio Machine and Rochester Rattlers.