vs. 
Rocking SoccerNews
News 
The game has been adapted to the 2009 ATP calendar and point system. These include some serious changes:
A new calendar for the major tournaments: The Hamburg clay masters has been replaced by a Madrid clay masters and the indoor Madrid masters has been replaced by a hardcourt Shanghai masters.
A new point system, giving twice as many points for most major tournaments. It also has larger differences between different rounds and the difference between the major level tournaments and the challengers has been increased.
In addition, the WTC points have been changed, making the difference between different levels smaller and making all WTC and JTC matches best of 5.
The point changes take effect immediately, the new calendar is only used for years that have not already been planned.
As a result you can expect major changes in the next ranking on the next update.
A new calendar for the major tournaments: The Hamburg clay masters has been replaced by a Madrid clay masters and the indoor Madrid masters has been replaced by a hardcourt Shanghai masters.
A new point system, giving twice as many points for most major tournaments. It also has larger differences between different rounds and the difference between the major level tournaments and the challengers has been increased.
In addition, the WTC points have been changed, making the difference between different levels smaller and making all WTC and JTC matches best of 5.
The point changes take effect immediately, the new calendar is only used for years that have not already been planned.
As a result you can expect major changes in the next ranking on the next update.