Most Titles
Open Era singles titles.
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Samantha Stosur 3 titles
WTA Japan Women's Open 1970 Draw & Results
CompletedKazuko Sawamatsu won the 1970 Japan Women's Open, defeating Kathleen Harter 6-3 7-5 in the final. The WTA 250 event was played November 2–8 in Osaka, Japan.
The Japan Women's Open is a hard-court WTA tournament in Osaka.
Full tournament history →Dates
Nov 2 — Nov 8
Location
Osaka, Japan
Category
WTA 250
Surface
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Prize money
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Historical categories use documented modern equivalents where available; unresolved editions keep their recorded category. Mapping details.
Results
Quarterfinals
Semifinals
Kazuko Sawamatsu
6-0 4-6 6-3
Kathleen Harter
6-4 10-8
Final
Kazuko Sawamatsu
6-3 7-5
Tournament Records
The leading Open Era records for Japan Women's Open.
Most Finals
Champion or runner-up finishes. 3 players share this record.
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Amy Frazier 4 finals
Most Match Wins
Recorded main-draw match wins.
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Samantha Stosur 24 wins
Most Appearances
Editions with a recorded main-draw match.
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Kimiko Date 11 appearances
View the full Japan Women's Open record book →
Open Era main-draw singles records from 1968 onward. Ranking records begin where reliable entering rankings are available.
Recent Finals
| Winner | Score | Runner-up | H2H | Match Data | Season | Surface |
|---|---|---|---|---|---|---|
| Leylah Fernandez | 6-0 5-7 6-3 | Tereza Valentova | H2H | Match data | 2025 | Hard |
| Suzan Lamens | 6-0 6-4 | Kimberly Birrell | H2H | Match data | 2024 | Hard |
| Ashlyn Krueger | 6-3 7-6(6) | Lin Zhu | H2H | Match data | 2023 | Hard |
| Su-Wei Hsieh | 6-2 6-2 | Amanda Anisimova | H2H | Match data | 2018 | Hard |
| Zarina Diyas | 6-2 7-5 | Miyu Kato | H2H | Match data | 2017 | Hard |
View full tournament history →
Frequently Asked Questions
- Where is Japan Women's Open held?
- Japan Women's Open is held in Osaka, Japan.
- Who won the most recent Japan Women's Open?
- The 2025 Japan Women's Open was won by Leylah Fernandez, who defeated Tereza Valentova 6-0 5-7 6-3.
- Who has won the most Japan Women's Open titles?
- Samantha Stosur has won 3 Japan Women's Open titles, the most by any player.
- When was the first Japan Women's Open played?
- The first edition of Japan Women's Open was held in 1970.