But if you´re a true fan of a certain player, I think you can´t really call yourself a fan if you don´t at least try to understand the player, why he changes his game, what he hopes to achieve with it, and so on. There could be many reasons to it, it would be stupid to just quit being a fan because the player changes his game, sometimes players are forced to do changes, even big ones.
That's true. I mean, tennis isn't really about playing how you want to play or what you think would be most fun anyway, it's about what achieves the most success. For example, from what I have heard in interviews from Taylor Dent, he doesn't like the courts being slower than they used to be, and I'm sure he would prefer to just serve-and-volley and chip and charge as much as he can, but he can't do that.
In the case of Melzer, I think it can be possible that he is trying to improve on his weaknesses so much that he is not using what used to be his strengths as much as he used to.