Sayaka Ishii
Updated
- Rating6521.22
- WTA rank#517
- Last 107-3
- Last 302-2
- Current streak1 Loss
Recent match previews
- 2026-10-18: vs Mary Stoiana, WTA Osaka (IX) (Japan)
- 2026-10-17: vs Elina Avanesyan, WTA Osaka (IX) (Japan)
Match effects, last 365 days
| Date | Opponent | Opp Rank | Opp Rating | Score | Result | Effect | % of Ranking | Tour | Tournament | Note |
|---|---|---|---|---|---|---|---|---|---|---|
| 25.10.2026 | Yulia Putintseva | 63 | 7005.37 | 4-6, 6-2, 6-3 | Loss | 428.85 | 172.38% | WTA SINGLES / 25.10.2026 | Japan Tokyo | |
| 24.10.2026 | Kyoka Okamura | 275 | 6709.46 | 6-4, 6-3 | Win | 353.24 | 186.61% | WTA SINGLES / 24.10.2026 | Japan Tokyo | |
| 18.10.2026 | Mary Stoiana | 133 | 6874.36 | 6-4, 7-5 | Loss | 203.14 | 133.63% | WTA SINGLES / 18.10.2026 | Japan Osaka | |
| 17.10.2026 | Elina Avanesyan | 145 | 6858.38 | 6-3 | Win | 517.16 | 88.41% | WTA SINGLES / 17.10.2026 | Japan Osaka | |
| 26.09.2026 | Hiromi Abe | 375 | 6614.18 | 6-3, 6-2 | Loss | -105.04 | 62.67% | WTA SINGLES / 26.09.2026 | Japan Nanao | |
| 25.09.2026 | Rion Itaya | 1155 | 6248.01 | 6-2, 6-0 | Win | 0.00 | 149.25% | WTA SINGLES / 25.09.2026 | Japan Nanao | |
| 24.09.2026 | Natsumi Kawaguchi | 479 | 6543.84 | 5-7, 7-6, 6-2 | Win | 75.56 | 209.82% | WTA SINGLES / 24.09.2026 | Japan Nanao | |
| 23.09.2026 | Nagi Hanatani | 1325 | 6197.93 | 7-6, 6-2 | Win | -136.64 | 146.97% | WTA SINGLES / 23.09.2026 | Japan Nanao | |
| 22.09.2026 | Rira Kosaka | 1367 | 6185.97 | 6-3, 6-1 | Win | -77.63 | 145.85% | WTA SINGLES / 22.09.2026 | Japan Nanao | |
| 21.09.2026 | Miku Suzuki | 9758 | 1000.00 | 6-0, 6-0 | Win | 0.00 | 144.73% | WTA SINGLES / 21.09.2026 | Japan Nanao | |
| 18.09.2026 | Hiromi Abe | 375 | 6614.18 | 4-6, 6-4, 6-3 | Loss | 74.50 | 153.21% | WTA SINGLES / 18.09.2026 | Japan Kyoto | |
| 17.09.2026 | Amelia Rajecki | 460 | 6557.60 | 6-7, 7-6, 6-3 | Win | 96.39 | 210.50% | WTA SINGLES / 17.09.2026 | Japan Kyoto | |
| 15.09.2026 | Cheuk Ying Shek | 625 | 6453.38 | 7-6, 6-4 | Win | 32.16 | 138.19% | WTA SINGLES / 15.09.2026 | Japan Kyoto | |
| 30.08.2026 | Urszula Radwanska | 644 | 6441.15 | 6-4, 7-5 | Loss | -230.07 | 91.63% | WTA SINGLES / 30.08.2026 | Portugal Leiria | |
| 27.08.2026 | Alice Ferlito | 1613 | 6118.03 | 6-2, 2-6, 6-4 | Loss | -289.09 | 119.38% | WTA SINGLES / 27.08.2026 | Spain Torello | |
| 26.08.2026 | Neus Torner Sensano | 546 | 6500.10 | 7-6, 6-2 | Win | 116.38 | 118.46% | WTA SINGLES / 26.08.2026 | Spain Torello | |
| 21.08.2026 | Juliana Giaccio | 769 | 6382.01 | 6-1, 6-2 | Loss | -369.21 | 28.50% | WTA SINGLES / 21.08.2026 | Spain Logrono | |
| 20.08.2026 | Valentina Losciale | 1068 | 6279.51 | 6-3, 6-4 | Win | -76.71 | 113.11% | WTA SINGLES / 20.08.2026 | Spain Logrono | |
| 19.08.2026 | Jordina Font | 2346 | 5947.94 | 6-7, 7-5, 6-1 | Win | -348.85 | 168.37% | WTA SINGLES / 19.08.2026 | Spain Logrono | |
| 10.08.2026 | Katarina Kujovic | 1246 | 6218.93 | 6-4, 7-5 | Loss | -452.28 | 78.55% | WTA SINGLES / 10.08.2026 | United Kingdom Aldershot | |
| 09.08.2026 | Erin Pearce | 1442 | 6159.36 | 6-2, 6-1 | Win | 0.00 | 103.93% | WTA SINGLES / 09.08.2026 | United Kingdom Aldershot | |
| 05.08.2026 | Amelia Rajecki | 460 | 6557.60 | 7-5, 6-3 | Loss | -124.86 | 67.18% | WTA SINGLES / 05.08.2026 | United Kingdom Roehampton I | |
| 03.08.2026 | Gabriella Da Silva Fick | 593 | 6475.16 | 7-6, 7-5 | Win | 53.94 | 99.23% | WTA SINGLES / 03.08.2026 | United Kingdom Roehampton I | |
| 02.08.2026 | Summer Yardley | 2428 | 5927.71 | 6-1, 6-1 | Win | -0.00 | 98.47% | WTA SINGLES / 02.08.2026 | United Kingdom Roehampton I | |
| 31.07.2026 | Rina Saigo | 385 | 6608.42 | 6-3, 6-0 | Loss | -92.80 | 24.24% | WTA SINGLES / 31.07.2026 | United Kingdom Aldershot | |
| 30.07.2026 | Hikaru Sato | 501 | 6527.83 | 6-4, 4-6, 6-2 | Win | 109.74 | 128.30% | WTA SINGLES / 30.07.2026 | United Kingdom Aldershot | |
| 29.07.2026 | Francesca Gandolfi | 754 | 6387.15 | 6-7, 6-4, 6-3 | Win | -40.74 | 143.23% | WTA SINGLES / 29.07.2026 | United Kingdom Aldershot | |
| 27.07.2026 | Mao Mushika | 1029 | 6290.72 | 6-2, 2-6, 12-10 | Win | -142.43 | 109.70% | WTA SINGLES / 27.07.2026 | United Kingdom Aldershot | |
| 26.07.2026 | Aleksandra Mateva | 2974 | 5790.64 | 6-4, 6-2 | Win | -290.29 | 93.30% | WTA SINGLES / 26.07.2026 | United Kingdom Aldershot | |
| 14.07.2026 | Hannah Klugman | 251 | 6739.18 | 7-6, 6-1 | Loss | 140.82 | 49.62% | WTA SINGLES / 14.07.2026 | United Kingdom Nottingham | |
| 08.07.2026 | Kayla Cross | 280 | 6701.53 | 6-2, 6-3 | Loss | -17.69 | 33.84% | WTA SINGLES / 08.07.2026 | USA Newport | |
| 23.06.2026 | Kaitlin Quevedo | 121 | 6893.81 | 6-0, 6-3 | Loss | 192.59 | 18.09% | WTA SINGLES / 23.06.2026 | United Kingdom Wimbledon | |
| 07.06.2026 | Vendula Valdmannova | 209 | 6785.21 | 6-3, 6-1 | Loss | 63.00 | 21.32% | WTA SINGLES / 07.06.2026 | United Kingdom Ilkley | |
| 30.05.2026 | Vendula Valdmannova | 209 | 6785.21 | 3-6, 6-2, 6-4 | Loss | 259.99 | 60.15% | WTA SINGLES / 30.05.2026 | United Kingdom Birmingham | |
| 20.05.2026 | Natsumi Kawaguchi | 479 | 6543.84 | 6-3, 7-6 | Loss | -70.71 | 41.77% | WTA SINGLES / 20.05.2026 | Japan Takasaki | |
| 12.05.2026 | Mina Miyahara | 1273 | 6210.79 | 7-6, 6-1 | Loss | -387.57 | 30.55% | WTA SINGLES / 12.05.2026 | Japan Kurume | |
| 11.05.2026 | Anri Nagata | 1658 | 6105.41 | 6-4, 6-3 | Win | -250.81 | 51.96% | WTA SINGLES / 11.05.2026 | Japan Kurume | |
| 28.04.2026 | Rina Saigo | 385 | 6608.42 | 6-4, 6-3 | Loss | -75.65 | 27.42% | WTA SINGLES / 28.04.2026 | Japan Gifu | |
| 27.04.2026 | Natsumi Kawaguchi | 479 | 6543.84 | 7-6, 6-4 | Win | 122.62 | 46.65% | WTA SINGLES / 27.04.2026 | Japan Gifu | |
| 23.04.2026 | Hanna Chang | 449 | 6567.58 | 7-5, 6-2 | Loss | -125.07 | 26.39% | WTA SINGLES / 23.04.2026 | Japan Miyazaki I | |
| 22.04.2026 | Naho Sato | 554 | 6497.69 | 4-6, 6-2, 6-3 | Win | 90.85 | 59.85% | WTA SINGLES / 22.04.2026 | Japan Miyazaki I | |
| 16.04.2026 | Kanon Sawashiro | 707 | 6411.23 | 6-0, 6-1 | Loss | -349.99 | 3.57% | WTA SINGLES / 16.04.2026 | Japan Miyazaki | |
| 14.04.2026 | Aoi Ito | 175 | 6828.54 | 6-0, 6-0 | Win | 557.33 | 42.21% | WTA SINGLES / 14.04.2026 | Japan Miyazaki | |
| 09.04.2026 | Kyoka Okamura | 275 | 6709.46 | 6-4, 6-3 | Loss | 25.38 | 23.69% | WTA SINGLES / 09.04.2026 | Japan Osaka | |
| 08.04.2026 | Carol Zhao | 332 | 6652.88 | 6-3, 7-5 | Win | 296.66 | 40.30% | WTA SINGLES / 08.04.2026 | Japan Osaka | |
| 06.04.2026 | Natsuho Arakawa | 1456 | 6155.69 | 1-6, 6-1, 10-4 | Win | -192.21 | 42.99% | WTA SINGLES / 06.04.2026 | Japan Osaka | |
| 06.04.2026 | Nana Onozawa | 1366 | 6186.03 | 6-3, 6-3 | Win | -155.19 | 39.69% | WTA SINGLES / 06.04.2026 | Japan Osaka | |
| 05.04.2026 | Kanako Osafune | 2918 | 5803.25 | 6-0, 6-0 | Win | 0.00 | 39.38% | WTA SINGLES / 05.04.2026 | Japan Osaka | |
| 17.03.2026 | Lizette Cabrera | 383 | 6609.28 | 6-4, 6-4 | Loss | -61.94 | 22.68% | WTA SINGLES / 17.03.2026 | Japan Kofu | |
| 04.03.2026 | Naho Sato | 554 | 6497.69 | 6-3, 1-6, 7-5 | Loss | -12.81 | 35.91% | WTA SINGLES / 04.03.2026 | Australia Launceston | |
| 27.02.2026 | Elena Micic | 337 | 6647.92 | 6-3, 7-5 | Loss | -34.55 | 19.74% | WTA SINGLES / 27.02.2026 | Australia Burnie | |
| 26.02.2026 | Yuhan Wang | 522 | 6516.20 | 6-3, 6-3 | Win | 174.99 | 29.39% | WTA SINGLES / 26.02.2026 | Australia Burnie | |
| 24.02.2026 | Yuno Kitahara | 739 | 6393.76 | 7-6, 3-6, 6-2 | Win | -53.45 | 36.17% | WTA SINGLES / 24.02.2026 | Australia Burnie |