Iga Swiatek continued her romp through the Australian Open draw with a quarter-final victory over Emma Navarro.
The Pole’s 6-1 6-2 win means she has dropped just 14 games so far in five matches – a feat bettered under the current format by only Maria Sharapova, Monica Seles and Steffi Graf.
But there was controversy after umpire Eva Asderaki-Moore did not spot a double bounce at a crucial moment in the fifth game of the second set.
Swiatek was under pressure for the first time in the match but won the game despite just failing to get to a short ball in time. Navarro protested but was denied a video review because she carried on playing the point.
The American eighth seed did not win another game, with Swiatek moving through to the semi-finals in Melbourne for the second time, where she will face Madison Keys.
Keys has also matched her best result here having first made the semi-finals a decade ago.
The American made it 10 victories in a row to start the season, coming from a set down to defeat Elina Svitolina 3-6 6-3 6-4
