Which tournaments do Roger, Nole or Murray have the prospect of winning 9 times in a row to beat Rafa's record (Assuming Rafa never wins another MC which is highly unlikely) ?
None whatsoever. Roger is 30, he's not winning any tournament 9 times in a row. Novak's best streak is 2 AO, he won't win 9.
Murray - I don't even need to say anything, do I?
Rafa's record won't be matched any time soon, if ever.