Ten seeded players were in action during the Cincinnati Open quarterfinals Aug. 15. Here's how the action unfolded in Mason.

Iga Swiatek outplayed Anna Kalinskaya to reach her third Cincinnati semifinal, where Elena Rybakina -- fresh off a straight-sets win over Aryna Sabalenka -- awaits.

But Vukov refused to sit silently - and after appealing the WTA's ban - he won his case and rejoined Rybakina's team at the Cincinnati Open. And that is already having a positive impact on the Kazakh, who is through to the semifinal after ousting top seed Aryna Sabalenka 6-1 6-4.

Ninth-seeded Elena Rybakina delivered 11 aces and dominated the match while recording a 6-1, 6-4 victory over top-seeded Aryna Sabalenka on Friday afternoon to reach the semifinals of the Cincinnati Open in Mason,