Tereza Valentova defeated Olga Danilovic 4–6, 6–2, 6–3 in the quarter-final of the WTA 250 Osaka tournament on hard court, confirming her status as pre-match favourite with odds of 1.33 to Danilovic's 3.58. After losing the opening set, Valentova regrouped decisively, dominating the second set before securing a commanding third to advance to the semi-finals. The result underscores Valentova's ability to recover from early setbacks and maintain control on hard courts, where consistency proved decisive against her Serbian opponent. Her progression to the last four strengthens her position in the tournament and demonstrates improved composure in high-pressure situations.