Japan Open · WTA
Japan Open 2025
WTA 250HardOsaka, Japan12 October – 19 October 2025Prize money: 275,094 USD49 matchesAltitude: 5 mCourt: Slow
Champion Leylah Fernandez · Final: 7-6(2) 6-3
Final rounds
| Final | Leylah Fernandez vs Tereza Valentova | 6-0 5-7 6-3 |
| Semifinal | Tereza Valentova vs Jaqueline Cristian | 6-7(3) 6-4 6-3 |
| Semifinal | Leylah Fernandez vs Sorana-Mihaela Cirstea | 6-1 2-6 6-4 |
| Quarterfinal | Tereza Valentova vs Olga Danilovic | 4-6 6-2 6-3 |
| Quarterfinal | Sorana-Mihaela Cirstea vs Viktorija Golubic | 6-2 2-6 6-2 |
| Quarterfinal | Jaqueline Cristian vs Naomi Osaka | w/o |
| Quarterfinal | Leylah Fernandez vs Rebecca Sramkova | 7-6(2) 6-3 |
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