Thanks. Could you tell where I could get it? I can't seem to find it.
What about the ITF Rules of Tennis?
not updated for 2013 yet
For the challenger question, I don't think it's in the rulebook as it's just an experiment so far.
For the time violation rule in grand slams, we have to wait for the 2013 ITF rules but I don't think the time violation change applies to grand slams as usually the time violation rules are very different in grand slams and on the ATP tour