Britain's Johanna Konta reached her second successive Grand Slam fourth round with victory over Czech Denisa Allertova at the Australian Open.
Konta, 24, won 6-2 6-2 at Melbourne Park to match her run to the last 16 at last year's US Open.
She is the first British woman to make the fourth round of the Australian Open since Jo Durie in 1987.
Konta goes on to face Czech ninth seed Karolina Pliskova or Russia's 21st seed Ekaterina Makarova on Monday.
Fellow Briton Andy Murray plays Joaoa Sousa of Portugal later on Saturday.
Quick-fire win for Konta
Konta dominated from the outset in the opening match on Hisense Arena, breaking serve at the first opportunity and firing down an ace 29 minutes later to seal the first set.