Juan Martin Del Potro beats Roger Federer at Flushing Meadows

Up next for Nadal will be the victor of the quarter-final clash between five-times US Open champion Federer and Juan Martin del Potro, the 2009 victor.

Nadal and Federer, two of the greatest players of all time, have met 37 times, including 12 at the Grand Slams, but never in NY.

But his serve, with which he saved two match points against Thiem, and his forehand are things of brutal beauty.

"The way I played or playing right now, it's not good enough in my opinion to win this tournament".

Rafael Nadal is coming off a straight sets win over Andrey Rublev that took 23 games to decide.

At the time, many thought it signified the first of several majors for the Argentine, but he was hampered by wrist injuries over the ensuing years and at times it looked like he might never return to the tour.

The 2009 champion has been struggling with illness and won only three games in the opening two sets against sixth-seed Dominic Thiem.

Federer and Nadal were denied a first ever US Open battle.

"He (Dolgopolov) is a player who can play incredible shots but sometimes he can be very unpredictable so I just waited for my opportunity". On five occasions they have been one match from meeting in New York-twice Nadal has lost and three times Federer has lost at the last hurdle.

Rublev was the youngest man since Andy Roddick in 2001 to reach the last eight, and he was overwhelmed by the world number one on his Arthur Ashe Stadium debut.

Federer believes that as a result, he was unable to recapture the form he displayed in his victorious campaigns at the Australian Open and Wimbledon earlier this year.

JUAN MARTIN DEL POTRO has more power than Popeye and more soul than Motown.

This is published unedited from the ANI feed.

It was the first time in 19 grand slam matches this year that Federer has tasted defeat. "Remain one match for me and two matches for him". Even then, Federer was a major favourite to beat Del Potro.

Del Potro said he hopes to repeat his 2009 victory over Nadal ahead of his epic five-set victory over Federer to capture his only Grand Slam title.

Del Potro converted the only break point of the opener and took it 7-5.

"I did well, and I start to enjoy a little bit more about the fans".

Federer is looking forward to facing an old foe. The No.12 seed beat Diego Schwartzman 6-4, 6-4, 6-2. "I was never really safe and I knew that there would always be one or two service games where I would be in danger".

  • Julie Sanders