Sixth seed Elina Svitolina beat former US Open finalist Madison Keys in a pulsating fourth-round match at the Australian Open.
The Ukrainian broke twice to take the first set but Keys won five games in a row and hit 16 winners as she went on to dominate the second.
Svitolina then held off five break points in a 16-minute game in the third set to win 6-2 1-6 6-1.
She will face Japanese Naomi Osaka or Latvian Anastasija Sevastova next.
More to follow.