Heather Watson pulled off a stunning comeback at the Australian Open to set up a third-round clash with fourth seed Agnieszka Radwanska.
Watson saved three match points in a second-set tie break before powering back to beat Ksenia Pervak 4-6 7-6 (9/7) 6-2.
It was the second match in succession the British number one had found herself a set and a break down but she pulled through to give herself a chance at gaining revenge on Pole Radwanska, who beat her at Wimbledon last year.
Asked if she thought she had missed the opportunity to reach the last 32 of a grand slam for the second time in her career, Watson admitted: "I'm not going to lie, I did a wee bit. But I just pushed it to the back of my mind and said 'she's going to have to win this'. I just didn't want to give it away."
Despite being roared on by a vociferous crowd on court eight, Watson lost the first two games, only to respond and level up at 2-2.
It remained on serve until the breaker which appeared to be going the way of Pervak, who had three chances to claim the match at 6-3.
But world number 50 Watson dug deep to claim it on her second set point.
After a second lengthy comfort break, Pervak returned but her will had been broken. Watson cruised into a 4-0 lead and then served it out reach the last 32, equalling her best run at a grand slam, achieved at Wimbledon last year.
Watson now faces world number four Radwanska, who recorded her 11th win on the trot in 2013 against Irina-Camelia Begu.
She has yet to drop a set this calendar year and warmed up for Melbourne by claiming the titles in Auckland and Sydney.
"She's a very different player to most of the girls," said Watson.
"She's consistent, got great feel so it's going to be another physical match. I think the last time I played her I just went out all guns blazing, went for way too much. This time I'm coming in a different player and I'm going to approach it differently."