Elina Svitolina has booked her place in the Australian Open quarter-finals after beating American Madison Keys in three sets.
The Ukrainian recovered from a nightmare second set to triumph 6-2, 1-6, 6-1 over the 17th seed at the Margaret Court Arena.
The 24-year-old breezed through the first set with two breaks of serve before Keys rallied in the second, taking a 5-0 lead before converting her second set point to level the match.
But the game-changing moment came in the third set at 1-1. Svitolina, who was serving, was forced to save five break points during a marathon hold of serve in the deciding set.
After the match, Svitoling said she kept her composure and focus in that third set to win.