US Lacrosse establishes eligibility guidelines to promote a safe and sportsmanlike environment. US Lacrosse believes that leagues, associations, and other organizers of youth lacrosse should provide playing opportunities that, as much as possible, aim to establish a "level playing field" among players of similar age. Source: (https://www.uslacrosse.org/rules/age-eligibility-guidelines)

I applaud US Lacrosse for doing this. And I remain confused why the clubs just can't change. The WYSL showed us that age based still produces the same level of competition.