Iroquois national indoor lacrosse team light show about the Haudenosaunee creation story and traditional dancing. The documentary "Spirit Game: Pride of a Nation" explains the meaning of lacrosse to the Iroquois people and covers the Iroquois Nationals in the 2015 WILC, featuring brothers Lyle and Miles Thompson. During the 2015 WILC, the first FIL sanctioned under–17 box lacrosse friendly took place between the Iroquois Nationals and Team Canada. The under-17 squads again faced off prior to the 2017 Heritage Cup. In 2015, the Six Nations held the inaugural World Lacrosse Challenge, an under–19 box lacrosse tournament featuring international club and national teams. The Iroquois fielded
Field lacrosse member William George Beers codified the modern game. He established the Canadian Lacrosse Association and created the first written rules for the game, "Lacrosse: The National Game of Canada". The book specified field layout, lacrosse ball dimensions, lacrosse stick length, number of players, and number of goals required to determine the match winner. Field lacrosse involves two teams, each competing to shoot a lacrosse ball into the opposing team's goal. A lacrosse ball is made out of solid rubber, measuring 7.75 to 8 inches (19.7–20 cm) in circumference and weighing 5 to 5.25 ounces (140–149 g). Each team plays with