Ball size- playing up (kinda)
I know this isn't a life and death question. But my kid is just turning 7 and his 2nd-3rd grade rec league will be using size 4 balls. We've got a bunch of them around and we'll send him up practice with a 4. And several 3s as well.
But for his age, being just on the small half of typical, should he still be using a size 3 for training at home even though he'll probably never compete with that size again? Or should we retire them? How much does this actually matter?