Is Roger a threat, even if he plays Oz? How much will Rafa be, though more likely, but at least they're scheduled to be in, which is more added to the threat, is my point. Bank on someone else if you like, but it's still my argument: the AO looks less of a lock for Novak because of: 1. age, 2. increased pressure for #21, 3. competition is threatening. And if you want to add: his old rivals are coming back, or at least one, which he didn't even have to face in this USO or last, and still didn't get the job done. No matter what some say, the window is closing even on Novak, and the pressure increases, because of that. Medvedev having broken through is a big deal. Presumably Thiem comes back. And some of the younger ones are becoming more of a threat. All I'm saying is that Novak does not go into Oz with much of anything like less pressure, and arguably the competition will be more formidable.