"But, again, I'm not too concerned about my game itself. Health-wise I feel much better than I did at the beginning of the tournament. I'm confident that everything is going in the right direction. He's world No. He's good in all areas," said the Johannesburg-born Briton.Fellow two-time champion Rafael Nadal also chases a quarter-final spot on Arthur Ashe Stadium on Sunday.

Source: Times of India September 04, 2016 10:07 UTC