Britain’s Emma Raducanu defeated Belgium’s Yanina Wickmayer 6-3 7-5 to progress to the Korea Open last eight in Seoul.
Raducanu, ranked 77th in the world, broke Wickmayer’s serve three times in a row at the end of the first set to seal the opener.
A cagey second set ended with Raducanu breaking once more, after being taken to deuce in the previous game.
The 19-year-old will play Poland’s world number 51 Magda Linette next.
Victory over Linette would be the first time Raducanu was won three matches in a single tournament since her extraordinary run to the US Open title in September 2021.