Round: 25
| WTA Tokyo Qual | 2017/09/16 03:00 | Momoko Kobori v Kateryna Volodko | 4-6,4-6 |
| ITF Women Nanao | 2017/08/30 02:10 | Lauren Albanese v Momoko Kobori | 7-6,6-4 |
| ITF Women Tsukuba | 2017/08/25 00:40 | Yuuki Tanaka v Momoko Kobori | 6-1,6-3 |
| ITF Women Tsukuba | 2017/08/24 00:40 | Nudnida Luangnam v Momoko Kobori | 3-6,7-6,3-6 |
| ITF Women Tsukuba | 2017/08/22 00:40 | Momoko Kobori v Katy Dunne | 1-6,6-2,6-2 |
| ITF Women Denain | 2017/07/03 13:30 | Momoko Kobori v Audrey Albie | 5-7,6-4,3-6 |
| ITF Women Perigueux | 2017/06/28 10:00 | Momoko Kobori v Olga Saez Larra | 2-6,3-6 |
| ITF Women Perigueux | 2017/06/27 11:45 | Momoko Kobori v Margot Yerolymos | 2-6,6-3,6-4 |
| WTA Tokyo Qual | 2017/09/17 01:00 | Madison Brengle v Eri Hozumi | 6-2,6-3 |
| WTA Tokyo Qual | 2017/09/16 02:35 | Eri Hozumi v Abigail Spears | 6-4,7-6 |
| WTA Tokyo Qual | 2017/09/09 05:45 | Jana Fett v Eri Hozumi | 6-2,6-2 |
| US Open Women Qual | 2017/08/23 21:05 | Lin Zhu v Eri Hozumi | 6-4,6-4 |
| ITF Women Vancouver | 2017/08/16 17:00 | Eri Hozumi v Mihaela Buzarnescu | 6-7,3-6 |
| ITF Women Vancouver Qual | 2017/08/15 17:00 | Eri Hozumi v Miyu Kato | 7-5,6-4 |
| ITF Women Vancouver Qual | 2017/08/14 16:00 | Eri Hozumi v Desirae Krawczyk | 4-6,7-5,6-3 |
| WTA Toronto Qual | 2017/08/05 18:10 | Eri Hozumi v Misaki Doi | 6-7,6-7 |