Robson topples another big name to advance

Andy Murray with the US Open trophy.
Andy Murray with the US Open trophy.
Andy Murray and Novak Djokovic following their US Open final.
Andy Murray and Novak Djokovic following their US Open final.
Andy Murray with the US Open trophy.
Andy Murray with the US Open trophy.
Andy Murray of Great Britain reacts after winning the US Open.
Andy Murray of Great Britain reacts after winning the US Open.
Andy Murray shakes hands with Novak Djokovic  after their US Open finals clash.
Andy Murray shakes hands with Novak Djokovic after their US Open finals clash.
Novak Djokovic of Serbia returns a shot during his men's singles final match against Andy Murray.
Novak Djokovic of Serbia returns a shot during his men's singles final match against Andy Murray.
Andy Murray returns a shot during his men's singles final match against Novak Djokovic.
Andy Murray returns a shot during his men's singles final match against Novak Djokovic.
Andy Murray reacts after a missed shot during the men's final.
Andy Murray reacts after a missed shot during the men's final.
Andy Murray serves to Novak Djokovic in front of packed Arthur Ashe stadium.
Andy Murray serves to Novak Djokovic in front of packed Arthur Ashe stadium.
Novak Djokovic serves to Andy Murray during the men's final.
Novak Djokovic serves to Andy Murray during the men's final.
Serena Williams and Victoria Azarenka pose for photos after the trophy presentation.
Serena Williams and Victoria Azarenka pose for photos after the trophy presentation.
Serena Williams reacts after beating Victoria Azarenka to win her fourth US Open.
Serena Williams reacts after beating Victoria Azarenka to win her fourth US Open.
Victoria Azarenka serves during the women's final.
Victoria Azarenka serves during the women's final.
Serena Williams is at full stretch during the final against Victoria Azarenka.
Serena Williams is at full stretch during the final against Victoria Azarenka.
Victoria Azarenka waits for Serena Williams to serve during the women's final.
Victoria Azarenka waits for Serena Williams to serve during the women's final.
Sara Errani and Roberta Vinci are all smiles as they receive the women's doubles trophy at the US Open.
Sara Errani and Roberta Vinci are all smiles as they receive the women's doubles trophy at the US Open.
Andy Murray talks to his coach Ivan Lendl during a training session ahead of the men's final.
Andy Murray talks to his coach Ivan Lendl during a training session ahead of the men's final.
Novak Djokovic reacts after beating David Ferrer in the semi-finals.
Novak Djokovic reacts after beating David Ferrer in the semi-finals.
David Ferrer reaches to return a shot during his semi-final loss to Novak Djokovic.
David Ferrer reaches to return a shot during his semi-final loss to Novak Djokovic.
Andy Murray recovered from losing the first set to defeat Czech Tomas Berdych in four sets to reach the final.
Andy Murray recovered from losing the first set to defeat Czech Tomas Berdych in four sets to reach the final.
David Ferrer (left) and Novak Djokovic discuss the postponement of their semifinal with tournament director Brian Earley.
David Ferrer (left) and Novak Djokovic discuss the postponement of their semifinal with tournament director Brian Earley.
The big screen at Arthur Ashe Stadium advises spectators of the postponement of play at the US Open.
The big screen at Arthur Ashe Stadium advises spectators of the postponement of play at the US Open.
After early rain, the sun came out, amid high winds, at Arthur Ashe Stadium.
After early rain, the sun came out, amid high winds, at Arthur Ashe Stadium.
A morning storm forced a 90-minute delay to the first men's semifinal between Andy Murray and Tomas Berdych.
A morning storm forced a 90-minute delay to the first men's semifinal between Andy Murray and Tomas Berdych.
Tomas Berdych of the Czech Republic kicks the ball out of frustration during his semifinal loss to Andy Murray.
Tomas Berdych of the Czech Republic kicks the ball out of frustration during his semifinal loss to Andy Murray.
Serena Williams lost just three games as she blazed past Italy's Sara Errani in the US Open semifinals.
Serena Williams lost just three games as she blazed past Italy's Sara Errani in the US Open semifinals.
Italy's Sara Errani feels the pain of a crushing semifinal defeat at the hands of Serena Williams.
Italy's Sara Errani feels the pain of a crushing semifinal defeat at the hands of Serena Williams.
World No 1 Victoria Azarenka dances after her three-set victory over Maria Sharapova.
World No 1 Victoria Azarenka dances after her three-set victory over Maria Sharapova.
The Bryan brothers do a celebratory chest-bump after claiming the US Open men's doubles title.
The Bryan brothers do a celebratory chest-bump after claiming the US Open men's doubles title.
Maria Sharapova screams after winning a vital point against Victoria Azarenka in the US Open women's semifinals.
Maria Sharapova screams after winning a vital point against Victoria Azarenka in the US Open women's semifinals.
Victoria Azarenka plays a backhand shot as she outlasted Maria Sharapova to reach the women's singles final at the US Open.
Victoria Azarenka plays a backhand shot as she outlasted Maria Sharapova to reach the women's singles final at the US Open.
Novak Djokovic swept past Juan Martin del Potro and into the US Open semifinals in straight sets.
Novak Djokovic swept past Juan Martin del Potro and into the US Open semifinals in straight sets.
Juan Martin del Potro leans against the net after losing a point against Novak Djokovic.
Juan Martin del Potro leans against the net after losing a point against Novak Djokovic.
David Ferrer drops to his knees after winning a fifth-set tiebreak against Janko Tipsarevic to reach the US Open semifinals.
David Ferrer drops to his knees after winning a fifth-set tiebreak against Janko Tipsarevic to reach the US Open semifinals.
Janko Tipsarevic takes a tumble during his quarter-final against David Ferrer.
Janko Tipsarevic takes a tumble during his quarter-final against David Ferrer.
David Ferrer returns a shot against Janko Tipsarevic.
David Ferrer returns a shot against Janko Tipsarevic.
Ekaterina Makarova and Bruno Soares celebrate their win in the mixed doubles.
Ekaterina Makarova and Bruno Soares celebrate their win in the mixed doubles.
Tomas Berdych celebrates his win over Roger Federer in the quarter-finals.
Tomas Berdych celebrates his win over Roger Federer in the quarter-finals.
Roger Federer's wife Mirka Federer and agent Tony Godsick can barely watch as the world No 1 loses to Tomas Berdych.
Roger Federer's wife Mirka Federer and agent Tony Godsick can barely watch as the world No 1 loses to Tomas Berdych.
Andy Roddick makes his final farewell at Flushing Meadow after his loss to Juan Martin del Potro.
Andy Roddick makes his final farewell at Flushing Meadow after his loss to Juan Martin del Potro.
The sun sets behind the New York City skyline, viewed from Arthur Ashe Stadium.
The sun sets behind the New York City skyline, viewed from Arthur Ashe Stadium.
Ana Ivanovic stretches for a backhand drop-shot during her defeat at the hands of Serena Williams.
Ana Ivanovic stretches for a backhand drop-shot during her defeat at the hands of Serena Williams.
Andy Murray can barely be seen through the fans scrambling for his autograph after his victory over Marin Cilic.
Andy Murray can barely be seen through the fans scrambling for his autograph after his victory over Marin Cilic.
Andy Murray lets out a roar during his four-set win over Croatian Marin Cilic.
Andy Murray lets out a roar during his four-set win over Croatian Marin Cilic.
Andy Roddick waves goodbye to the Flushing Meadow crowd after his final professional match.
Andy Roddick waves goodbye to the Flushing Meadow crowd after his final professional match.
Maria Sharapova stretches for the ball during her quarter-final win over Marion Bartoli.
Maria Sharapova stretches for the ball during her quarter-final win over Marion Bartoli.
Stan Wawrinka smashes his racket in frustration during his loss to Novak Djokovic.
Stan Wawrinka smashes his racket in frustration during his loss to Novak Djokovic.
Novak Djokovic returns a shot during his win over Stan Wawrinka.
Novak Djokovic returns a shot during his win over Stan Wawrinka.
Victoria Azarenka reacts during her quarter-final win over Samantha Stosur.
Victoria Azarenka reacts during her quarter-final win over Samantha Stosur.
Andy Roddick in action in his rain delayed match against Juan Martin Del Potro.
Andy Roddick in action in his rain delayed match against Juan Martin Del Potro.
Grounds crew dry the court after rain suspended play.
Grounds crew dry the court after rain suspended play.
Maria Sharapova returns a shot in her match against Marion Bartoli.
Maria Sharapova returns a shot in her match against Marion Bartoli.
David Ferrer returns a shot during his fourth round match against Richard Gasquet.
David Ferrer returns a shot during his fourth round match against Richard Gasquet.
Marion Bartoli serves during her quarter-final against Maria Sharapova.
Marion Bartoli serves during her quarter-final against Maria Sharapova.
Andy Murray plays a backhand during his straight sets demolition of Canadian Milos Raonic in the US Open fourth round.
Andy Murray plays a backhand during his straight sets demolition of Canadian Milos Raonic in the US Open fourth round.
Serena Williams did not drop a game as she rolled Andrea Hlavackova 6-0 6-0 in 57 minutes to reach the quarterfinals.
Serena Williams did not drop a game as she rolled Andrea Hlavackova 6-0 6-0 in 57 minutes to reach the quarterfinals.
Andrea Hlavackova of the Czech Republic lunges for a return against Serena Williams.
Andrea Hlavackova of the Czech Republic lunges for a return against Serena Williams.
Mike Bryan (left) and Bob Bryan of the United States celebrate as they bump chests during their men's doubles third round match against Santiago Gonzalez of Mexico and Scott Lipsky of the United States.
Mike Bryan (left) and Bob Bryan of the United States celebrate as they bump chests during their men's doubles third round match against Santiago Gonzalez of Mexico and Scott Lipsky of the United States.
Martin Klizan of the of Slovakia hits a return to Marin Cilic of Croatia.
Martin Klizan of the of Slovakia hits a return to Marin Cilic of Croatia.
Roberta Vinci of Italy hits a return to Agnieszka Radwanska.
Roberta Vinci of Italy hits a return to Agnieszka Radwanska.
Serbian Ana Ivanovic reached her first grand slam quarterfinal in four years, defeating Bulgaria's Tsvetana Pironkova.
Serbian Ana Ivanovic reached her first grand slam quarterfinal in four years, defeating Bulgaria's Tsvetana Pironkova.
Maria Sharapova serves against Nadia Petrova during their round of 16 match.
Maria Sharapova serves against Nadia Petrova during their round of 16 match.
Novak Djokovic pumps his fist after defeating Julien Benneteau of France 6-3, 6-2, 6-2 to reach the US Open fourth round.
Novak Djokovic pumps his fist after defeating Julien Benneteau of France 6-3, 6-2, 6-2 to reach the US Open fourth round.
Frenchman Richard Gasquet signs autographs after defeating American Steve Johnson.
Frenchman Richard Gasquet signs autographs after defeating American Steve Johnson.
Australian Sam Stosur plays against British teen Laura Robson as shadows creep across Flushing Meadows.
Australian Sam Stosur plays against British teen Laura Robson as shadows creep across Flushing Meadows.
Fabio Fognini hits the court after being beaten by a shot from American Andy Roddick.
Fabio Fognini hits the court after being beaten by a shot from American Andy Roddick.
Gilles Simon wipes sweat from his face during his defeat against American Mardy Fish.
Gilles Simon wipes sweat from his face during his defeat against American Mardy Fish.
Roger Federer returns a shot during his third round win over Fernando Verdasco.
Roger Federer returns a shot during his third round win over Fernando Verdasco.
Andy Murray eyes his next shot during his match against Feliciano Lopez.
Andy Murray eyes his next shot during his match against Feliciano Lopez.
Jelena Jankovic reacts during her loss to Agnieszka Radwanska.
Jelena Jankovic reacts during her loss to Agnieszka Radwanska.
Serena Williams returns a shot against Ekaterina Makarova in the third round.
Serena Williams returns a shot against Ekaterina Makarova in the third round.
Feliciano Lopez wipes the sweat from his face during his four set loss to Andy Murray.
Feliciano Lopez wipes the sweat from his face during his four set loss to Andy Murray.
Kids clamber for autographs at the US Open.
Kids clamber for autographs at the US Open.
Andy Roddick celebrates his win over Bernard Tomic.
Andy Roddick celebrates his win over Bernard Tomic.
Teenager Laura Robson is swamped by fans and media after beating Li Na.
Teenager Laura Robson is swamped by fans and media after beating Li Na.
Serena and Venus Williams celebrate a point during their doubles match played in the New York dusk.
Serena and Venus Williams celebrate a point during their doubles match played in the New York dusk.
Novak Djokovic returns a shot during his second round match.
Novak Djokovic returns a shot during his second round match.
Maria Sharapova serves during her third round win against Mallory Burdette.
Maria Sharapova serves during her third round win against Mallory Burdette.
Ryan Harrison reacts after a point during his singles loss to Juan Martin Del Potro.
Ryan Harrison reacts after a point during his singles loss to Juan Martin Del Potro.
Lleyton Hewitt is pumped up during his tight encounter with Gilles Muller.
Lleyton Hewitt is pumped up during his tight encounter with Gilles Muller.
Lucie Safarova serves during her third round match against Nadia Petrova.
Lucie Safarova serves during her third round match against Nadia Petrova.
Roger Federer thanks the crowd after winning his second round match.
Roger Federer thanks the crowd after winning his second round match.
Jo-Wilfried Tsonga packs his bags and exits the US Open after his four-set loss to Slovakian Martin Klizan in the second round.
Jo-Wilfried Tsonga packs his bags and exits the US Open after his four-set loss to Slovakian Martin Klizan in the second round.
Maria Kirilenko signs autographs for fans after her second round win.
Maria Kirilenko signs autographs for fans after her second round win.
Philipp Petzschner of Germany reacts during his men's singles second round match against Nicolas Almagro.
Philipp Petzschner of Germany reacts during his men's singles second round match against Nicolas Almagro.
Serena Williams hits a shot during her second round match against Maria Jose Martinez Sanchez.
Serena Williams hits a shot during her second round match against Maria Jose Martinez Sanchez.
Agnieszka Radwanska returns a shot during her second round match.
Agnieszka Radwanska returns a shot during her second round match.
Jo-Wilfried Tsonga reacts during his second round loss to Martin Klizan of Slovakia.
Jo-Wilfried Tsonga reacts during his second round loss to Martin Klizan of Slovakia.
Kei Nishikori of Japan serves against Tim Smyczek in the second round.
Kei Nishikori of Japan serves against Tim Smyczek in the second round.
Ana Ivanovic blew by Swede Sofia Arvidsson 6-2 6-2 in 64 minutes to reach the third round at the US Open.
Ana Ivanovic blew by Swede Sofia Arvidsson 6-2 6-2 in 64 minutes to reach the third round at the US Open.
Reitring Kim Clijsters waves goodbye for the last time to the Flushing Meadows crowd after her defeat to British teen Laura Robson.
Reitring Kim Clijsters waves goodbye for the last time to the Flushing Meadows crowd after her defeat to British teen Laura Robson.
Laura Robson of Great Britain celebrates after beating Kim Clijsters in the second round.
Laura Robson of Great Britain celebrates after beating Kim Clijsters in the second round.
Philipp Kohlschreiber of Germany eyes the ball as he plays a shot against Michael Llodra.
Philipp Kohlschreiber of Germany eyes the ball as he plays a shot against Michael Llodra.
Janko Tipsarevic of Serbia returns a shot from Guillaume Rufin during their first round match.
Janko Tipsarevic of Serbia returns a shot from Guillaume Rufin during their first round match.
Li Na prepares to serve in the shadows during the second round.
Li Na prepares to serve in the shadows during the second round.
Juan Martin Del Potro in mid serve during his first round match.
Juan Martin Del Potro in mid serve during his first round match.
World No 1 Victoria Azarenka (right) shakes hands with Kirsten Flipkens of Belgium after her straight sets victory.
World No 1 Victoria Azarenka (right) shakes hands with Kirsten Flipkens of Belgium after her straight sets victory.
Serena Williams in action during her first round match against Coco Vandeweghe.
Serena Williams in action during her first round match against Coco Vandeweghe.
Caroline Wozniacki of Denmark takes an injury time-out during her match to Irina-Camelia Begu of Romania.
Caroline Wozniacki of Denmark takes an injury time-out during her match to Irina-Camelia Begu of Romania.
Novak Djokovic hits a forehand during his first round win over Paolo Lorenzi.
Novak Djokovic hits a forehand during his first round win over Paolo Lorenzi.
Fans walk the grounds during day two of the 2012 US Open.
Fans walk the grounds during day two of the 2012 US Open.
Thomas Berdych signs autographs for fans.
Thomas Berdych signs autographs for fans.
Venus Williams signs autographs for fans after her first round victory.
Venus Williams signs autographs for fans after her first round victory.
Andy Roddick's red, white and blue kicks at the US Open.
Andy Roddick's red, white and blue kicks at the US Open.
Agnieszka Radwanska of Poland serves during her first round victory over Russian Nina Bratchikova.
Agnieszka Radwanska of Poland serves during her first round victory over Russian Nina Bratchikova.
Andy Murray is all smiles during his first round match against Alex Bogomolov Jr of Russia.
Andy Murray is all smiles during his first round match against Alex Bogomolov Jr of Russia.
No 3 seed Maria Sharapova returns a ball in her first round match.
No 3 seed Maria Sharapova returns a ball in her first round match.
An Australian fan gets into the spirit as he supports Matthew Ebden in his first round match.
An Australian fan gets into the spirit as he supports Matthew Ebden in his first round match.
Lucie Safarova signs tennis balls for fans after her first round win over Melanie Oudin.
Lucie Safarova signs tennis balls for fans after her first round win over Melanie Oudin.
It's all too much for some as a ball girl takes a nap in the stands.
It's all too much for some as a ball girl takes a nap in the stands.
Ball boys look on as day one of the US Open gets underway.
Ball boys look on as day one of the US Open gets underway.
Dark clouds loom over Flushing Meadows on day one of the US Open.
Dark clouds loom over Flushing Meadows on day one of the US Open.
Alex Bogomolov Jr stretches to play a backhand against Andy Murray.
Alex Bogomolov Jr stretches to play a backhand against Andy Murray.
Marion Bartoli of France stretches to reach a ball in her opening round match.
Marion Bartoli of France stretches to reach a ball in her opening round match.
Officials attempt to dry the court after a rain delay on day one.
Officials attempt to dry the court after a rain delay on day one.
Sam Stosur returns a ball during her first round win over Petra Martic.
Sam Stosur returns a ball during her first round win over Petra Martic.
Nadia Petrova of Russia reacts during her women's singles first round match against Jarmila Gajdosova of Australia.
Nadia Petrova of Russia reacts during her women's singles first round match against Jarmila Gajdosova of Australia.
James Blake is pumped up after winning a point against Lukas Lacko of Slovakia.
James Blake is pumped up after winning a point against Lukas Lacko of Slovakia.

Laura Robson dissolved into giggles at a reference to British boy band One Direction.

Yes, she's definitely 18. She also just defeated two former Grand Slam champions at the US Open, which is good because she'll be facing another in her next match.

The British teen beat 2011 French Open winner Li Na in the third round Friday, two days after she ended the career of four-time major champ Kim Clijsters. Next up: Sam Stosur, who happens to be the defending champion here.

"I have had a fairly tough draw, haven't I?" Robson said with the smile of a player racking up confidence.

Ranked 89th, Robson had never been past the second round of a major tournament or knocked off a top 10 opponent before this year's Open. Now she's done both, after eliminating the ninth-seeded Li 6-4, 6-7 (5), 6-2.

Robson put her hands to her head in 'I-can't-believe-this' joy after the Chinese star returned her serve long on the final point.

"I have had lots of tough matches against some very experienced opponents, so the way that I see it, it was time to start winning a few of them," she said.

Stretching before the match, Robson noticed a tweet from English football star Wayne Rooney wishing her luck. Except he called her "Laura Robinson." Rooney later faulted predictive text for the gaffe, which didn't seem to dent Robson's self-assurance.

"Can you blame that on predictive text, though?" she joked. "I'm not so sure."

Following her from the stands was British actor James Corden.

"I spotted him midway, like, first set, and then spent the rest of the time trying not to wave," Robson said.

She also showed poise after failing to close out the match in the second-set tiebreaker, then overcoming two incorrect calls in the third set where she had to replay points she would've won if the initial ruling had been right.

With a break point on Li's serve at 2-2 in the final set, Robson's return clipped the baseline and Li hit the ball wide. But the line judge called Robson's shot out and, after a review overturned it, Robson lost the replayed point. Li won the next point as well to earn game point. But with the Louis Armstrong Stadium crowd roaring its support, Robson rallied back to get the break.

"I was a little bit annoyed. But that's what happens from time to time, so you've got to deal with it," she said. "I think being a little bit annoyed seemed to help me, seeing as I broke the first game then I held serve the next time it happened."

On Wednesday, Robson ended Clijsters' career, winning both sets in tiebreakers in the second round against the 23rd-seeded Belgian. Robson's career may now be really getting started.

She became the next great British hope when she captured the 2008 Wimbledon girls title at age 14. Four years later, injury-free for the first time in a while, she seems to be reaching that potential, the youngest woman ranked in the top 100.

"I'm only 18, so if I was that negative a year ago, then who knows what I'm going to be like in a few years," Robson said, referring to whether she ever doubted her future.

"But, no, I have always thought that I can play with the top girls. Whenever I've practiced with, you know, Caroline or Maria, I've always felt that the level was there. It was just taking that onto the match court and keeping the level up for the whole match."

And she became the first British woman to make the fourth round at a Grand Slam event since Sam Smith at 1998 Wimbledon. Robson had 27 unforced errors to 34 by the 30-year-old Li.

"I was making a lot of mistakes in my whole match, so of course give a lot of free points to her," Li said. "Made her like, 'Oh, I got more confidence. Oh, I can beat her.' "

The seventh-seeded Stosur was pushed for the first time in this year's Open by No 31 seed American Varvara Lepchenko, but dominated the second set after winning the first in a tiebreaker for a 7-6 (5), 6-2 victory.

Stosur has never faced Robson - or really watched her play for long.

"She's obviously full of confidence and had two very, very good wins," Stosur said.

GIANT KILLER: Laura Robson reacts after beating Li Na.
GIANT KILLER: Laura Robson reacts after beating Li Na.

AP