Originally Posted by Netspirit
Djokovic is well-positioned to wipe the HC field clean.
I fully expect him to win the AO and USO (only challenged by del Potro). Nadal, in any form, should win his last FO.
The most intriguing tournament of 2013 is going to be Wimbledon. Djokovic is very beatable on grass, Murray is very beatable everywhere, Nadal is a big question mark outside of clay, and the 32-year old Federer may still choose to peak for that particular event as a dangerous floater.
I doubt Djokovic will win both the Australian Open and US Open.