Golf Ball Front:

This is a model that I created with my 300 polygon sphere. 

Created In: Autodesk's 3DS Max and Mudbox

Golf Ball Right:

Golf Ball Back:

Golf Ball Left:

Tennis Ball  Front:

Same base model as the others, just different textures and normal maps.

Created in: Autodesk's 3DS Max and Mudbox

Tennis Ball Back:

Both sides of the Tennis ball look like this.

The base of all of my sports balls.