Here is a list of downloadable courts in 3d and 2d. I didn’t make them just publish the download Links.
I think there are lot of courts 2 or 3 times in there – you can decide by yourself which one looks best and which one you use for your game
Or world tour.
I know not the exact number but I think this could be more than 220 courts (there are more than 130 2D Courts) in all Parts together.
Challengers
http://www.megaupload.com/?d=7G1K15KD
http://www.megaupload.com/?d=GN7BNEJZ
ATP 250
http://www.megaupload.com/?d=EEX1KCKT
http://www.megaupload.com/?d=JX1OBJK8
ATP 500
http://www.megaupload.com/?d=IGG45HL9
http://www.megaupload.com/?d=G3CQGVJ0