I think the rule is that a junior who turns 18 this year can play on a USTA team. I think it is a bit of loophole because a Nationally ranked junior can play on a 4.5 team according to the guidelines. We have one team in our league that has three high school players on their roster. Two of them are good 4.5 players, but one of them is a 5.5 player will be playing D1 somewhere next year, but has not committed to a team. Edit, his sectional ranking is 20. Just wondering what you all think, I don't think there is anything that addresses this.