Now that my 3rd girl is playing competitive tennis (8 years old), I find it interesting to see how the girls who played 10U (until almost 11) have faired in 12U division. My daughter's coach recently made the decision to have her skip 10U and slowly integrate her into the 12U tournaments (slowly due to my daughter's maturity at losing). He has been working on patterns and recognizing a girls weakness and attach it. She has a long way to go but I feel the approach will setup her up great for the long term if she continues in tennis. It is interesting the watch the 10U graduates. These are the kids who drop down to 10U for the Level 2/3 to beat up on lesser kids to get the points. I have seen these kids in the 12U division are barely competing in the Level 4s due to the lack of a game being developed at the younger ages. The 10U matches I see at the lower levels are most of a battle of the consistency versus developing an approach to find the girl's weakness and expose it. I am wondering how we will judge the effectiveness of 10U down the road, once these kids have been playing the 6-8 years.