Laura Robson shocked eighth seed Petra Kvitova in a tense second-round encounter at the Australian Open.
The British number two joined Heather Watson in the last 32 after edging a three-set encounter against the former Wimbledon champion, with the decider totalling 20 games.
Robson, 18, prevailed 2-6 6-3 11-9 and will face American Sloane Stephens in the next round.
Laura Robson beats Petra Kvitova
2013 Australian Open - Day 4(01 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain celebrates in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(02 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain celebrates at match point after defeating Petra Kvitova of Czech Republic in her second round match during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(03 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(04 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(05 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain celebrates winning the second set in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(06 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Fans show their support as Laura Robson of Great Britain plays in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(07 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain celebrates at match point after defeating Petra Kvitova of Czech Republic in her second round match during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(08 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain loses a point in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(09 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(10 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(11 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a backhand in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(12 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain loses a point in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(13 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(14 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Coach of Laura Robson of Great Britain, Zeljko Krajan (R), watches on during her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(15 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(16 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(17 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain serves in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(18 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain serves in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(19 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(20 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain celebrates at match point after defeating Petra Kvitova of Czech Republic in her second round match during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(21 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a backhand in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(22 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain loses a point in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(23 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain celebrates at match point after defeating Petra Kvitova of Czech Republic in her second round match during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(24 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain celebrates after defeating Petra Kvitova of Czech Republic in her second round match during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(25 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain loses a point in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(26 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain celebrates at match point after defeating Petra Kvitova of Czech Republic in her second round match during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(27 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain celebrates at match point after defeating Petra Kvitova of Czech Republic in her second round match during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(28 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain is congratulated by Petra Kvitova of Czech Republic after her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(29 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain waves to the crowd after winning her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(30 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain loses a point in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(31 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(32 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(33 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain looks on in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(34 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(35 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain serves in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(36 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a backhand in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(37 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain reacts in her second round match against Petra Kvitova of Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(38 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a forehand in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(39 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a backhand in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(40 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain plays a backhand in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(41 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain in action in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(42 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain has a drink in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(43 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain towels off in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
2013 Australian Open - Day 4(44 of44)
MELBOURNE, AUSTRALIA - JANUARY 17: Laura Robson of Great Britain towels off in her second round match against Petra Kvitova of the Czech Republic during day four of the 2013 Australian Open at Melbourne Park on January 17, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images) (credit:Getty Images)
"I knew it was going to be a really tough match," Robson said. "I have always struggled against 'lefties' anyway.
"I was just trying to return her serves and it was very hard. But I knew once I got my returns firing a bit and I got a bit more confidence in my serve, I would get myself into the match, and that is what I managed to do."
She added her gratitude to the support as well: "Thanks for staying to watch, I thought you'd all leave after Federer."