I watched the DVD. It's pretty interesting. What struck me was how dedicated and focused the 4 kids featured are. These little guys are amazing.
It's a shame that Tom Pura, the father of TJ Pura, who is a player that was featured in the film (Tom Pura was the producer and originator of the documentary) passed away unexpectedly shortly after production. Now little TJ is left without one of his greatest inspirations. It's a sad story, but I hope TJ will continue his tennis life because he is a solid young player and a great kid.
The documentary is similar in nature to Unstrung, but the kids are younger. There are also some insightful interviews from the junior players, their coaches, parents, as well as former players. I would recommend watching it if you have an interest in junior tennis.