Is Rafael Nadal a millionaire?
Yes!
Not only has he won 100's of thousands playing the games but the sponsers, Trade Mark and extras (i.e adverts) he does, is sure to have pushed him over the Million Pound mark.
Why does Nadal get injured so often?
Getting injured is new for Nadal. Last year during the French Open 2009 marked his first major injury (knee). The injury was a result of Nadal's playing style which is all out, every point. While Nadal is still young (23), this type of injury can come back and may cause Nadal to play just under 100% for fear of the injury returning.
What are the basics for all good ground tennis strokes?
My tennis tutor taught me to keep the racket face vertical and go through the hit as though you are hitting 4 balls. At the start, the middle, the actual ball and the follow through.