I don't know exactly how to phrase this, but I will just say that I have seen several #1 in the world juniors who were in good shape and have not done anything decent at the tour level. Taylor Townsend is a very interesting case because she is ready for the high levels of the now if she can move. Basically, she is a diamond in the rough and fitness can be a fairly easy fix. I don't even think she should play juniors anymore, but she just can't break into the top 100 wta in the shape she is in.
Jeff Drock MS, CSCS www.superfittennis.com
Certified Tennnis Specific Strength and Conditioning Specialist