Quote Originally Posted by Rapyer View Post
every player has different training speeds. my 23 year old is learning faster than my 19 year old
Yes, that's what I said. In your case, your 19 year old grows very slowly, while the 23 year old isn't too bad for his age. However, comparing a 23 year old and an 18 year old, the 18 year old has the possibility of reaching a far higher rate of development. If both are right at the peak, the 18 year old will grow faster. That's why I say I would only do it with an 18 year old with maximum training speed.