Sayaka Ishii - WTA #242 (2025-10-06)
| wtatennis.com | WTA | Country |  Unknown |
| Wikipedia | Eng / Fr | Birth | - |
| Career best ranking | Never ranked | Résidence | Unknown |
| Height | - | ||
| Weight | - |
| Conditions | W | D | ratio |
|---|---|---|---|
| Hard (out.) | 0 | 1 | 0.00% |
| Hard (in.) | 2 | 1 | 66.67% |
| TOTAL | 2 | 2 | 50.00% |
| # | Date | Categ | Tournament | Conditions | Round | #Rank | Opponent | Score | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025-03-18 | 1000 |  Miami WTA 1000 | Hard (out.) | 64e | #206 |  #55 Emma Raducanu | 6/2 6/1 | |
| 2 | 2024-10-21 | 500 |  Tokyo Open WTA | Hard (in.) | QF | #264 |  #16 Diana Shnaider | w/o | |
| 3 | 2024-10-21 | 500 | Tokyo Open WTA | Hard (in.) | 8e | #264 |  #159 Zeynep Sonmez | 4/6 6/2 6/3 | |
| 4 | 2024-10-21 | 500 | Tokyo Open WTA | Hard (in.) | 16e | #264 | #161 Sara Saito | 6/1 6/1 |
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