Tereza Valentova defeated Jaqueline Cristian 6–7 6–4 6–3 in the semi-final of the WTA 250 Osaka tournament on hard court. The Czech player, who entered as the clear pre-match favourite at 1.38 odds, delivered a composed performance to progress to the final despite Cristian pushing her hard in a competitive opening set that went to a tiebreak. After losing that first set, Valentova regained control in the second and third sets, breaking Cristian's serve at crucial moments to seal her place in Sunday's final. The result represents another significant step forward for Valentova in what has been a strong run at Osaka.