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

Elena Rybakina is set to face Iga Swiatek in the semi-finals of the Cincinnati Open. Despite just making her sixth appearance at Cincinnati, Rybakina has beaten two Grand Slam champions en route to the last four of the WTA 1000 tournament.

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

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.