Yee, it's very difficult to get autographs from Hewitt and Nalbandian. They aren't the friendliest guys on Tour. Hewitt runs in the other direction when a fan approaches.
Andy is one of the friendliest to fans, and probably one of the most accommodating in signing autographs -- unless it's right before a match. The reason it is difficult to get an autograph from him nowadays is because he's so mobbed with requests. But in the beginning, it was very easy -- he would try to sign for everyone. And he still does what he can, but there are just too many.
It was that way with Pat Rafter. When he came back from his shoulder surgery, it was very easy to get an autograph from him. He was out there practicing all the time, trying to get back in shape, and was happy to sign autographs and take photos.
Once he got to the Wimbledon final, and was really "back" again, you couldn't get near him. He signed quite a few, but unless you were really aggressive, you had no chance.
I don't think Federer is as accommodating in general, but he still is pretty good about it. Mark Philippoussis is one of the best -- he'll stand around for 20 minutes making sure everyone gets an autograph. Even though he has the longest name on the Tour. :lol:
Most guys are pretty accommodating, unless you catch them at the wrong time. Such as right after a tough loss, or before a match.