I'm not a fan of the hold-backs, but people talk about double hold-backs but I would love someone to confirm one. Seems like a myth perpetuated by parents making excuses. And candidly I don't know of any hold-backs that were born before March, so 6 months is what we are talking about. Is it truly that prevalent? I know I have seen kids on the field that look much older but when they take off their helmet they look much younger. Some kids just grow early.