MELBOURNE, Jan 21 - Barbora Krejcikova fought back from going a set short to defeat Jelena Ostapenko in a 2-6 6-4 6-4 defeat and advance to the Australian Open on Friday.
To pull off the 2017 French Open winner, the Czech, seeded number four, recovered from a set and a break down midway through the second set.
"Tody's match was really tough, really difficult, and I had to really dig deep to win," said Krejcikova.
"I'm really pleased about it and also proud of myself. I'm never going to leave without a fight and I'm really happy that I'm able to show that on the court."
After a pair of service breaks, Ostapenko won the opening set, and Krejcikova believed she'd been unable to compete in the tournament.
Krejcikova has not won the match since two serve breaks.
Krejcikova was given a time violation for returning late to court ahead of the decisionmaking process, claiming she was delayed because of a broken necklace.
She managed to break Ostapenko's serve in the first game of the final set, holding on to victory and setting up a fourth round meeting with Victoria Azarenka.