There is a big advantage to being a better athlete. Sure, being older/bigger helps - but it’s not like you can simply follow the team’s chronological age order and the “huge advantage” 6 month older boys are the best on the team. Holdbacks, reclassification, playing down with PG year promise are cheating/gaming the system, but calling out fall birthday kids as have ‘huge advantage’ is a bit of a stretch!
