Former world number one Caroline Wozniacki came from 4-0 down in the first set to dump ninth seed Svetlana Kuznetsova out of the US Open.
Wozniacki made a nightmare start to the second-round contest in Arthur Ashe Stadium and was two points from trailing 5-0, but she came storming back to record a surprise 6-4 6-4 victory.
It is not the first time the Dane has come from behind to beat Kuznetsova at Flushing Meadows, as she overturned a one-set deficit in 2009 to win 2-6 7-6 (7/5) 7-6 (7/3).
Wozniacki admits she used that match as inspiration for her latest triumph.
“I have great memories here,” said Wozniacki, who will face Romania’s Monica Niculescu in round three.
“I have had matches against Sveta so many times before here where she’s been killing literally on court 6-2 4-1, and then I have managed to come back and win the match in three sets.
“It’s like, ‘You know what? Just keep going, wait for your opportunity and your chance’, and I did that today.”
Wozniacki climbed top of the world rankings in 2010 but has struggled for fitness and form since and now finds herself placed 74th in the world.
Twice a US Open runner-up, Wozniacki has been sidelined by ankle and arm injuries this season but the 26-year-old insists she never considered retirement.
“I wasn’t thinking about quitting. I know that I have a lot of opportunities, I have a lot of other interests, and my life is going to be good regardless,” Wozniacki said.
“Honestly I just have fun now. I enjoy playing. I love playing tennis. That’s why I play. At the end of the day, I know my worth. I know how good I can play.
“I know that with hard work, hopefully I can get back there.”
Press Association Sport