Dude, the ESA, at least they used to back in the good old days, has different divisions even amongst specific age divisions. Like:
They have Boys 1A, 2A and 3A
Junior Men 1A, 2A and 3A
The 1A are for the novices. 2A is for the intermediates and 3A is for the friggin Matt Keenan shredders.......
They used to have this back when I howled at the moon many eons ago.