He lost, simple as that. If he doesn't pick his game up, he won't even make it to Nadal.
Djokovic's game has become so Anti-Nadal, perfectly designed to dethroning the King, that it is actually vulnerable against more of the field. He needs to get through the field, before he even can think about the King.
Society is breeding a new kind of troll...But this is where the trolling stops...and I start.