WTArating 1468 · peak 1714
Sayaka Ishii
Japan · 21 years old · plays right-handed
WTA singles record since 2007
Won-lost
13-17
43% of matches
Titles
0
0 finals lost
Tiebreaks
3-2
won-lost
Deciding sets
6 of 11
47% of games won
By surface
| Surface | Won-lost | Win % | Games won | Tiebreaks | Rating |
|---|---|---|---|---|---|
| hard | 8-8 | 50% | 50% | 2-2 | 1601 |
| grass | 5-8 | 39% | 44% | 1-0 | 1361 |
| clay | 0-1 | 0% | 20% | 0-0 | 1466 |
Counted from scores; walkovers excluded. See surface Elo and share of games won.
Recent matches
| Date | Tournament | Opponent | Result | Score |
|---|---|---|---|---|
| 2026-07-08 | Cerity Partners Hall of Fame Open for the Van Alen Cup Presented by the Margaret Fund Round 1 | Kayla Cross | loss | 6-2 6-3 |
| 2026-06-23 | Wimbledon Qualifying 1st Round | Kaitlin Quevedo | loss | 6-0 6-3 |
| 2026-06-07 | Lexus Ilkley Open Qualifying 1st Round | Vendula Valdmannova | loss | 6-3 6-1 |
| 2026-05-30 | Lexus Birmingham Open Qualifying 1st Round | Vendula Valdmannova | loss | 3-6 6-2 6-4 |
| 2025-07-11 | Cerity Partners Hall of Fame Open for the Van Alen Cup Presented by the Margaret Fund QF | Tatjana Maria | loss | 6-3 6-1 |
| 2025-07-09 | Cerity Partners Hall of Fame Open for the Van Alen Cup Presented by the Margaret Fund Round 2 | Destanee Aiava | win | 3-6 6-3 6-3 |
| 2025-07-08 | Cerity Partners Hall of Fame Open for the Van Alen Cup Presented by the Margaret Fund Round 1 | Hanna Chang | win | 6-1 4-6 7-5 |
| 2025-06-24 | Wimbledon Qualifying 1st Round | Kathinka von Deichmann | loss | 7-5 6-1 |
| 2025-06-09 | Lexus Ilkley Open Qualifying Final | Valentina Ryser | loss | 6-4 7-5 |
| 2025-06-08 | Lexus Ilkley Open Qualifying 1st Round | Alana Smith | win | 6-1 1-6 6-2 |
| 2025-06-03 | Lexus Birmingham Open Round 1 | Wei Sijia | loss | 6-3 6-4 |
| 2025-06-01 | Lexus Birmingham Open Qualifying Final | Arianne Hartono | win | 3-6 7-6(3) 6-3 |
| 2025-05-31 | Lexus Birmingham Open Qualifying 1st Round | Amelia Rajecki | win | 6-4 6-4 |
| 2025-05-19 | Roland Garros Qualifying 1st Round | Panna Udvardy | loss | 6-2 6-1 |
| 2025-03-19 | Miami Open presented by Itau Round 1 | Emma Raducanu | loss | 6-2 6-1 |
| 2025-01-08 | Australian Open Qualifying 2nd Round | Sachia Vickery | loss | 7-6(2) 6-4 |
| 2025-01-07 | Australian Open Qualifying 1st Round | Aoi Ito | win | 6-3 6-4 |
| 2024-12-30 | Workday Canberra International Qualifying Final | Oksana Selekhmeteva | loss | 6-7(2) 6-3 6-3 |
| 2024-12-29 | Workday Canberra International Qualifying 1st Round | Dalila Jakupovic | win | 6-4 6-3 |
| 2024-10-25 | Toray Pan Pacific Open Tennis QF | Diana Shnaider | loss | w/o |
| 2024-10-23 | Toray Pan Pacific Open Tennis Round 2 | Zeynep Sonmez | win | 4-6 6-2 6-3 |
| 2024-10-22 | Toray Pan Pacific Open Tennis Round 1 | Sara Saito | win | 6-1 6-1 |
| 2024-10-20 | Toray Pan Pacific Open Tennis Qualifying Final | Clara Tauson | win | 1-6 7-5 7-5 |
| 2024-10-19 | Toray Pan Pacific Open Tennis Qualifying 1st Round | Sae Noguchi | win | 6-2 6-2 |
| 2024-10-12 | Kinoshita Group Japan Open Qualifying 1st Round | Kimberly Birrell | loss | 6-2 3-6 6-3 |
| 2024-08-20 | Tennis in the Land powered by Rocket Round 1 | Katerina Siniakova | loss | 6-7(5) 6-3 7-6(5) |
| 2024-08-18 | Tennis in the Land powered by Rocket Qualifying Final | Elvina Kalieva | win | 7-5 6-1 |
| 2024-08-17 | Tennis in the Land powered by Rocket Qualifying 1st Round | Zheng Saisai | win | 6-3 6-4 |
| 2024-03-17 | Miami Open presented by Itau Qualifying 1st Round | Bernarda Pera | loss | 6-0 6-4 |
| 2023-09-23 | Toray Pan Pacific Open Tennis Qualifying 1st Round | Harriet Dart | loss | 4-6 6-1 6-3 |
| 2022-09-17 | Toray Pan Pacific Open Tennis Qualifying 1st Round | Ellen Perez | loss | 6-3 6-3 |
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