Mastoor, I agree with you that Novak should learn he doesn't have to answer every question he's asked, and he should stop taking the bait on the controversial ones. He needs to subscribe to the time-tested tradition of athletes making bland, uninteresting responses to all questions. And his team needs to muzzle Becker. What the heck was he thinking with this one?
As for Rafa and his team, I don't see why they would even think to respond. Murray is pretty friendly with Rafa, so it wouldn't occur to them that he was referring to Nadal. Plus, his current position is, if you accuse him directly, he'll sue you. Very clear.
As to those here who think Murray is just bitter, two things: I'll say again, nothing says he's indicating the others of the big 3; and it's funny that so many people tell me I'm naive when I say I think that tennis is mostly clean, and yet, when Andy calls out that he has his doubts, he's dismissed as angry and bitter. Which is it?