Elena Rybakina defeated Aryna Sabalenka 6–1, 6–4 in the Cincinnati Masters 1000 quarter-final on hard court, an upset victory against the pre-match favourite. Sabalenka entered as the odds-on favourite at 1.63, but Rybakina's dominant performance, particularly in the opening set, proved decisive. The Kazakhstani player's clean execution and court control allowed her to break serve repeatedly and dictate rallies from the baseline. Sabalenka, despite her ranking and seeding status, struggled to find rhythm and was unable to mount a sustained challenge, especially after losing the first set so decisively. Rybakina's convincing win suggests renewed confidence heading into the latter stages of the tournament and marks a significant scalp against one of the tour's top players.