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

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.

Top-seeded Jannik Sinner of Italy shook off an early challenge from upstart Terence Atmane of France and advanced to the finals of the Cincinnati Open with a 7-6 (4), 6-2 victory. Sinner will face familiar foe Carlos Alcaraz in the final after the No. 2-seeded Spaniard cruised past No. 3 Alexander Zverev of Germany 6-4, 6-3.

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,