New York  - Roger Federer performed his everyday magic to mow down Tommy Robredo 7-5, 6-2, 6-2 and reach the quarter-finals of the US Open, setting up a rerun of his winning French Open final as the men's top seed started off week two with a solid win.

The Swiss world number one, aiming for a record sixth straight trophy at Flushing Meadows, will play against Robin Soderling who advanced 7-5, 3-6, 6-2 when eighth seed Nikolay Davydenko retired with a groin injury.

Federer beat Soderling in June to win his first title at Roland Garros before repeating the victory in the Wimbledon fourth round for an 11-0 record against the Swede.

A US star was born on the women's side with America's newest tennis darling, Melanie Oudin, stretching her fairytale run by knocking out a third straight Russian opponent to move into a breakthrough last-eight spot.

The smiling 17-year-old from Georgia had her family on hand in the cavernous Ashe Stadium during a 1-6, 7-6 (7-2), 6-3 comeback over Nadia Petrova.

Oudin, who announced her presence on the world stage with a Wimbledon fourth-round showing in July, calmly took down the number 13 after losing the opening set and going down a break in the second.

But for the third time in as many matches, the teenager rose to the occasion after losing the first set.

"I kept my belief even when I was down," said Oudin, the youngest US woman to reach an Open quarter-final since Serena Williams a decade ago. "She was all over me, but I kept fighting. I got the break-back in the second set and took it from there. I'm so happy I won.

"She played a lot like my past two opponents, so I had the same kind of game plan going into it. I knew that she was really a tough competitor, and I was going to have to play a good match. That's what I ended up doing."

Kateryna Bondarenko of Ukraine crushed Argentine Gisela Dulko 6-0, 6-0 while Belgian Yanina Wickmayer put out Czech Petra Kitova 4-6, 6- 4, 7-5.

The bubbly Oudin accounted for fourth seed Elena Dementieva in a second-round surprise, stunned 2006 champion Maria Sharapova in the third before completing her Russian hat-trick with Petrova.

She could meet a fourth Russian if 2004 champion Svetlana Kuznetsova beats Dane Caroline Wozniacki.

"I don't think I started well," said the number 70, who broke Petrova's last three service games. "She was serving unbelievable (10 aces), but I stayed with her in the second.

"She gave me a couple of free points, and I gained confidence as it went on. I believed I could do it - and I did. This is really good for American tennis."

Federer was immaculate as he won his 38th straight at Flushing Meadows, where he last lost in 2003.

He toyed with Robredo after lifting the opening set, losing just two points on serve in the third set and ending the one-hour, 48- minute afternoon with his eighth and ninth aces.

He broke five times, fired 35 winners and never faced a break point against the outgunned 14th seed.  dpa