US Lacrosse is grandfathering in existing teams. The only teams that will have to adhere to the strict guidelines of September 1st will be the 2027 group. That group has to be birthday compliant. The other teams older than them do NOT have to be compliant and are grandfathered. Bit of a weak methodology and my vote would have been to go cold-turkey like soccer did but the reality is that the landscape of competitive lacrosse is controlled more by the clubs than the governing body. Personally don't even see this really gaining a foothold as the Elite Clubs are setting up their own Tournaments and so they don't even really need US Lacrosse and can thumb their noses at the big tournament players. I think if you ask most elite clubs who holds the better tournaments it would be NLF and they don't need to change. US Lacrosse....Eunuchs.