Emil Ruusuvuori upset third-round favourite Andrey Rublev at the Cincinnati Masters on hard court in the Round of 32, securing a 7–6, 5–7, 7–6 victory. Despite entering as a significant underdog at 3.71 odds against Rublev's 1.32 favourite status, the Finnish player navigated a closely contested match that went to a decider. All three sets proved competitive, with both players pushing through tiebreaks and extended rallies to determine the outcome. Ruusuvuori's upset win represents a notable scalp at Masters 1000 level and suggests improved form heading into the latter stages of the summer hard-court season.