Swiss superstar Roger Federer crashes out of US Open to Tommy Robredo ROGER Federer suffered a stunning upset in the fourth round of the US Open, the 17-time Grand Slam champion falling to Spanish 19th seed Tommy Robredo 7-6 (7/3), 6-3, 6-4 in a last-16 match Monday. Federer's failure, on the heels of a shock second-round Wimbledon exit, thwarted a potential quarter-final match with 12-time Grand Slam winner Rafael Nadal, in what would have been their first meeting on the New York hardcourts. "The way I played," Federer said, "I couldn't have beaten Rafa." Instead, it will be Robredo, in his first US Open quarter-final, awaiting the winner of a later match between Nadal, who is 6-0 against his countryman, and Germany's 22nd-seeded Philipp Kohlschreiber. Robredo, who had lost his 10 prior matches against the Swiss star, suffered seven prior fourth-round US Open defeats and matched his best Grand Slam performance by finally breaking through. I'm delighted. Today the difference is I won the break points and he did not," said 31-year-old Robredo. It was a really, really tough night and I am so happy. It was really a great experience. Roger Federer of Switzerland reacts after losing to Tommy Robredo of Spain following their 2013 US Open men's singles match. "That was not a very good close," Federer said. It just ended up being a bad combination of many things. Federer hit 45 winners but also made 43 unforced errors and managed only five aces while Robredo hit 70% of his first serves and won four of his seven break chances. "I'm going to feel like I beat myself," Federer said. ``It was up to me to make the difference and I just couldn't. I self destructed, which is really disappointing. When things came to the crunch I just couldn't do it. It's frustrating. Tommy Robredo of Spain after defeating Roger Federer of Switzerland during their 2013 US Open men's singles match. This was the first year since 2002 that Federer has not made a Grand Slam final. It was the first time Federer has missed the last-eight in consecutive Slams since the 2003 Australian and French Opens, just before he won his first major crown at Wimbledon later that same year. Roger Federer of Switzerland plays a backhand to Tommy Robredo of Spain during their fourth round men's singles match on Day Eight of the 2013 US Open. "Amazing, eh," Robredo said. I beat the best guy of all times in a great stadium like this where he loves to play. Robredo broke Federer at love in the seventh game for a 4-3 edge and they held to set up Robredo serving for the match in the 10th game, fans chanting, ``Let's Go Roger" in vain hopes of willing the wilting once-king to a rally for the ages, only to watch as Robredo held again to win in two hours and 24 minutes.