Funny thing: On Friday night, I was speaking with Djokovic's coach, Marian Vajda, after his protégé's five-set semifinal victory against Andy Murray. Vajda said it was the best match he had ever seen Djokovic play and it might stand as the best. Two days later, we get this.
Now, of course, there's a mental component as well. Seven straight losses, with three in major finals, is a lot to bear, even for someone with Nadal's spirit. On the other hand, he came within a few points of winning on Sunday and was serving at 4-2 in the fifth set. So basically it's up to him to frame this and draw as much encouragement or discouragement as he wants.