I always wonder that among the four Grand Slams, they have one on clay, one on grass but why two on hard courts, when they could well have come up with maybe another surface for either one of the hard court US, or AO.
I recently read there is a carpet surface in Basel. They could well have had a carpet as a grand slam, no?
That would make four different surfaces. That'd be interesting.
Another thing is, is there any real difference in cemented surfaces of the US and AO circuits
Bring home the answers, dudes and dudees!