Well there is a 3rd possibility, you just happened to put topspin in your name not knowing it was in his name.
But if you do know then you are either someone who has an account here started another one to mock him, or you lurked here and started the account intentionally with topspin in the name for whatever reason you wanted a name similar to his.
Me thinks its not a coincidence so either fast clay is right or you are a double account
because the word "topspin" is so very unusual for someone to come up with it in a tennis forum?
get a grip