Kei Nishikori, the world number 11, has been on the higher rungs of the list containing the most injury prone players on the tour. Of late, he has had to withdraw from the Toronto Masters due to a foot injury. Not so long ago, in Madrid, he was up a set and a break against Nadal, absolutely dominating the King of clay like never before. However his hip injury got the better of him on that occasion and he was forced to let the opportunity slip. In this US Open the story has been anything but the same. The Japanese number 1 has competed in two tight, back-breaking five set thrillers and emerged the better player on both times of asking. His first scalp was the number 5 seed Milos Raonic, followed by the second victim, namely Stanislas Wawrinka, seeded 3.
— US Open Tennis (@usopen) September 3, 2014