I saw the first two sets of the match and frankly Del Potro was horribly erratic. By then he had made countless number of unforced errors and was having a problem with his forehand. He was struggling even to keep the ball in. I am really surprised that he won it from that point

He must have played really well. Congratulations to him.

From another wannabe to the Champion, he is just 20 years old has age on his side. He also has the record of winning most ATP titles after making debut in the seniors circuit. Hope he doesn't go down like Novak did.