Iga Swiatek has continued her magisterial progress at the French Open after marching into the fourth round with a 6-4 6-4 victory over her Polish countrywoman Magda Linette.
But while the former world No.1's trek to the last-16 has proved trouble-free, without the loss of a set in her three matches, it suddenly becomes serious as she'll have to be at her Sunday best when she tackles in-form Marta Kostyuk.
The Ukrainian also eased towards the showdown on another suffocatingly hot morning at sun-bathed Roland Garros on Friday, making light work of Swiss Viktorija Golubic 6-4 6-3.
Swiatek, who started her bid for a fifth Paris title by dismantling Australian teen Emerson Jones on Monday, had a slight early blip before comprehensively making amends for her surprise early loss to world No.73 Linette in Miami in March.
