By Chineze Ogugua
Hours after Nadal did his part with an easy victory to get to the semifinals at Flushing Meadows, Federer was unable to join him as he fell to 2009 champion Juan Martin del Potro last night in a 7-5, 3-6, 7-6 (8), 6-4 loss.
Federer entered the quarter-finals with a 19-0 Grand Slam record this season, including titles at the Australian Open and Wimbledon.
Federer’s failure to progress at the U.S. Open might be down to a tweaked back he suffered at a tournament last month as he was not quite at his best for stretches.
Del Potro will face off with three-time winner Rafael Nadal in the semi-final who defeated Andrey Rublev 6-1 6-2 6-2 in his best performance so far in the tournament.