If you have ever stopped to actually think about the game and sport of tennis you would soon realize that it is not that hard of a sport and most people can learn to play it. There are some basic rules that you need to know before you start playing but you will soon learn about them. You will need to be in pretty good shape to play a real game of tennis.
Nike has always been a leader in the upscale tennis shoe market and since the 80s they have pretty dominated the market by signing big name sports stars like Michael Jordan and more recently LeBron James and Tiger Woods. Nike spends big money on getting these celebrity sports star endorsements to the tune of nearly 500 million dollars a year so it must be working for them.