Stadium: Court 1 Round: 45 Ground: Hardcourt outdoor
| ITF Women Liuzhou | 2017/10/26 04:30 | Hiroko Kuwata v Eri Hozumi | 6-4,6-1 |
| Australian Open Women Qual | 2018/01/11 02:30 | Tamara Zidansek v Eri Hozumi | 6-3,6-3 |
| WTA Auckland Qual | 2017/12/30 00:10 | Silvia Soler-Espinosa v Eri Hozumi | 6-2,6-3 |
| WTA Honolulu | 2017/11/23 02:15 | Shuai Zhang v Eri Hozumi | 4-6,6-4,6-3 |
| WTA Honolulu | 2017/11/20 21:15 | Haruka Kaji v Eri Hozumi | 5-7,1-6 |
| WTA Taipei | 2017/11/16 06:30 | Lizette Cabrera v Eri Hozumi | 6-2,7-5 |
| WTA Taipei | 2017/11/14 05:25 | Eri Hozumi v Evgeniya Rodina | 7-6,6-2 |
| ITF Women Tokyo | 2017/11/09 05:15 | Eri Hozumi v Junri Namigata | 7-6,3-6,3-6 |
| ITF Women Tokyo | 2017/11/08 08:15 | Eri Hozumi v Haruka Kaji | 6-4,7-5 |
| ITF Women Hong Kong | 2018/01/06 02:00 | Ya-Hsuan Lee v Hiroko Kuwata | 6-4,6-4 |
| ITF Women Hong Kong | 2018/01/05 02:00 | Yuuki Tanaka v Hiroko Kuwata | 4-6,1-6 |
| ITF Women Hong Kong | 2018/01/04 02:00 | Risa Ushijima v Hiroko Kuwata | 2-6,0-6 |
| ITF Women Hong Kong | 2018/01/03 02:00 | Valeriya Zeleva v Hiroko Kuwata | 2-6,1-6 |
| ITF Women Hong Kong | 2018/01/02 02:00 | Ying Zhang v Hiroko Kuwata | 1-6,3-6 |
| ITF Women Hong Kong | 2017/12/30 02:00 | Hiroko Kuwata v Haruka Kaji | 6-4,2-6,6-7 |
| ITF Women Hong Kong | 2017/12/29 02:00 | Hiroko Kuwata v Helene Scholsen | 6-2,6-3 |
| ITF Women Hong Kong | 2017/12/28 02:00 | Hiroko Kuwata v Pei-Chi Lee | 6-4,7-5 |