Whitout doing calculations at a guess I think if he wins the Olympycs and playes not badly in Canada if he goes there, after a F in Ciccinnati, final or win at USO. I think he's very motivated now to win it. And defending Basel and the WTF playng a F at Paris Bercy he can finish #1.
Djokovic has to share the other titles with Nadal, Murray, Tsonga, Berdych and Ferrer - And why not some unexpected follower - MAYBE DIMITROV
and all should be easier.