When was the last time..

When was the last time USA had no players of 20yo or younger in Top 100? And no Top prospects in sight?

I guess the last time was a few months ago -- right before Serena turned 21. ;)

No, seriously, that does look bad. Somebody better come along soon!

Well, as the USTA goes, so goes the WTA. The WTA would want to start a youth development program in the USA for its own financial sake.