There is more to winning than talent. It's not all about that in sports in general, it takes more than that to be successful. Doesn't mean players whose results are weak don't have the talent to have better results.
I say Nalbandian is not talented. You say he is. We can go around in circles all day - there are no cold hard facts for you to say he is talented.
I say Federer is not talented. You say he is. I ask why, punk. You say he has 16 grand slam titles. I lose the argument.
Unless you have something to back it up, you can't go claiming that x player without a single grand slam is talented.
And to the guy who asked is Roddick more talented than Nalbandian?