Good tennis sim, no long term playability.
However there isn't much after that. After completing your first year and going up the rankings the tournaments stay the same and the minigames just get harder, there is nothing extra. As you gain ranking you do unlock different tournaments but with the same players in both if it wasn't for the different courts and different decals you would struggle to tell which tournament you were playing in.
My biggest gripe about this game is inconsistency between tournaments. I recorded my first defeat in the 3rd year of the game after dropping into the top 100 players, to Federer. I was actually glad because a) it was the most exciting match I had played so far and b)i was starting to feel the game was far too easy. The next tournament I entered into was for the top 300 players so didn't think i'd see Federer any time soon, however after easy making it to final, I was very excited to see my opponent was Federer and this was my chance for revenge!!
I beat him with only touching the ball 10 times :( So much for any great rivalry between us. I'm guessing what the game does is pick players at random and adjusts how well they play to suit the tournament. IMHO its a poor move as it can mean one week beating someone like Feberer easily and next week getting put out by someone who played and beat easily in your first match.
So, the actual tennis games are enjoyable and the minigames would be great if they offered them in the PS store on their own, but for VT4 I hope they put much more effort in to the career mode.