Stadium: COURT A Round: 25 Ground: Synthetic outdoor
| ITF W25 Nanao | 2022/09/28 01:00 | Sayaka Ishii v Saki Imamura | 4-6,4-6 |
| WTA Tokio | 2022/09/17 01:00 | Sayaka Ishii v Ellen Perez | 3-6,3-6 |
| ITF W15 Monastir | 2022/06/19 08:30 | Francesca Curmi v Sayaka Ishii | 6-2,4-6,7-5 |
| ITF W15 Monastir | 2022/06/18 08:30 | Sayaka Ishii v Jiho Shin | 6-3,6-2 |
| ITF W15 Monastir | 2022/06/17 08:00 | Sayaka Ishii v Camila Romero | 6-2,6-2 |
| ITF W15 Monastir | 2022/06/16 10:00 | Sayaka Ishii v Milana Zhabrailova | 6-3,6-3 |
| ITF W15 Monastir | 2022/06/14 13:00 | Jennifer Luikham v Sayaka Ishii | 2-6,1-6 |
| ITF W15 Monastir | 2022/06/09 11:55 | Eva Guerrero Alvarez v Sayaka Ishii | 6-4,6-2 |
| ITF W25 Makinohara | 2022/10/03 04:10 | Natsumi Kawaguchi v Honoka Uchiyama | 6-1,6-1 |
| ITF W25 Nanao | 2022/09/26 00:50 | Natsumi Kawaguchi v Sara Saito | 6-3,3-6,5-10 |
| ITF W25 Nanao | 2022/09/25 02:00 | Natsumi Kawaguchi v Michiru Furuya | 6-2,6-2 |
| ITF W15 Chiang Rai | 2022/06/24 04:30 | Ramu Ueda v Natsumi Kawaguchi | 6-4,6-3 |
| ITF W15 Chiang Rai | 2022/06/23 02:00 | Vanshita Pathania v Natsumi Kawaguchi | 0-6,1-6 |
| ITF W15 Chiang Rai | 2022/06/14 07:25 | Tamachan Momkoonthod v Natsumi Kawaguchi | 6-2,7-6 |
| ITF W25 Chiang Rai | 2022/06/07 04:00 | Michika Ozeki v Natsumi Kawaguchi | 6-4,3-6,10-6 |
| ITF W25 Chiang Rai - kvalifikace | 2022/06/06 02:00 | Yuna Ohashi v Natsumi Kawaguchi | 2-6,4-6 |