Switzerland's Roger Federer, the No. 7 seed, crushed France's Adrian Mannarino 6-3, 6-0, 6-2 in the third round of the U.S. Open.

The 32-year-old Federer, who many consider the greatest tennis player of all time, needed just one hour and 21 minutes on Saturday night to send Mannarino packing from Arthur Ashe Stadium.

"I'm happy that I'm playing so well. You take it in your stride, you know. You try to play either as well as you have done in previous years, or you could draw motivation and inspiration from all sorts of angles, you know. It's been a tough year, but it hasn't been a horrible year, you know. I'm still ranked in the top 10," the Swiss star said in his post-match interview.

Federer, a five-time U.S. Open champion, will face Spain's Tommy Robredo in the round of 16.

Robredo is "a player I've known since a long time. He came through the juniors with me. He's only a year younger than I am. I know his game well. He knows mine really well. We have played I think over 10 times on the tour. I think he's got a great forehand, so I have to be wary of that always against him," Federer said.

On the women's side, Italian qualifier Camila Giorgi, the world No. 136, defeated Denmark's Caroline Wozniacki 4-6, 6-4, 6-3.

"I was really focused, even if my first set wasn't really good. But after, I mean, I was focused every point. Then if I did mistakes, it's because for (sic) my game," Giorgi said.

The 21-year-old Giorgi played aggressively throughout the match and did not appear nervous on the court at Arthur Ashe Stadium, finishing with 46 winners to Wozniacki's 13.

Giorgi's next opponent will be countrywoman Roberta Vinci, the No. 10 seed, who beat Italy's Karin Knapp 6-4, 6-3.

American wildcard Alison Riske pulled off the other big upset on Saturday, defeating former Wimbledon champion Petra Kvitova of the Czech Republic 6-3, 6-0.

Riske's next opponent will be Slovakia's Daniela Hantuchova, the world No. 48, who beat Israeli qualifier Julia Glushko 3-6, 7-5, 7-6 (7-4). EFE