There is some game on the internet, it's called 'Megatennis'.
What do you have to do? Every player in the top 100 (i think so...) has an amount of WTA-points (based on the WTA ranking). You get an amount of 18.000 WTA-points and you need to compose a group of 10 WTA-players.
During the season you earn points, when your player plays the final, you get a lot of points, when they lose in the first...you know
It's totally free, just for fun, nothing to win. Really cool game. I just wanted to let you know, maybe you can enjoy it. I played it last year with Kim and Justine in my group. I ended number 7 of i think 150 players (not really sure). Now Kim and Justine are way to expensive
Come and check it out
One more thing: the site and the game are in Dutch, but you can play. You have to register before 14th of january. If you have questions, please pm me.