problem is: there is pretty much nothing at all for the pc.
I used to play Top Spin on Xbox with a couple friends... everyone with his own Xbox, of course. and it was simply amazing. but there is also a way to play Online with your Xbox... Top Spin 2 or the new tennis game by Sega coming out soon for the 360 can also be played Online, I guess. None of these titles are going to be released for Pc, of course
TS 2 for PC should be out in December.
I am hoping that they're planning TS 3, because they need to reimplement features which were present in TS 1 but are missing in TS 2 (for example attitude/emotions, replays, etc.). 4 player online mode and some serious bug fixing needs to be done too. And while Virtua Tennis 3 (the Sega game) might have great graphics, it will probably lack the realism of Top Spin. Yeah, many ppl love VT exactly for that reason, the arcade feeling, but I prefer to have more realism in my sports games. I dont want some stupid "World Tour", give me a real ATP Tour!