Rafa continues to struggle with lower back issues. this may open up some opportunities for others as the tournament progresses.
I have a feeling that Federer is quite capable of making a deep run here. I think he will run down Stan in the quarters.
top 1/2 could see a surprise. Nole may not be the one to make the final. we will just have to see. Isner has lost some of his edge that he displayed 2 years back but he could be coming around.
Cilic may be playing the best tennis of his career. And then there is Dynamitrov. His stock is definitely on the rise.