Stadium: Court 7 Round: 28 Ground: Hardcourt outdoor
| ITF - W100 Tokyo - Doubles Femmes | 2019/11/14 04:00 | Kostic N / Simmonds C v Kaji H / Namigata J | 3-6,3-6 |
| ITF - W100 Tokyo - Doubles Femmes | 2019/11/12 05:30 | Ozeki M / Popovic I v Kaji H / Namigata J | 4-6,3-6 |
| Hiroshima, Japon, Doubles | 2019/09/13 03:00 | Mchale C / Savinykh V v Kaji H / Namigata J | 6-4,6-1 |
| Hiroshima, Japon, Doubles | 2019/09/12 04:15 | Potapova/Sizikova v Kaji H / Namigata J | 3-6,2-6 |
| Hiroshima, Japon, Doubles | 2019/09/11 09:10 | Kaji H / Namigata J v Hon/Maria | 7-5,6-2 |
| Granby, Doubles W-ITF-CAN-05A | 2019/07/27 18:00 | Gleason Q / Neel I v Kaji H / Namigata J | 6-7,7-5,8-10 |
| Granby, Doubles W-ITF-CAN-05A | 2019/07/26 16:50 | Ho J / Morgina A v Kaji H / Namigata J | 6-4,3-6,5-10 |
| Granby, Doubles W-ITF-CAN-05A | 2019/07/25 20:00 | Abdelouahid H / Giavara H v Kaji H / Namigata J | 3-6,1-6 |
| ITF - W100 Tokyo - Doubles Femmes | 2019/11/12 05:25 | Jang S J / Kim D v Hayashi/Shimizu | 3-6,6-2,8-10 |
| Kofu, Doubles W-ITF-JPN-05A | 2019/03/19 06:00 | Hayashi/Shimizu v Gatto-Monticone G / Murray S | 5-7,3-6 |
| ITF W25 Yokohama WD | 2019/03/07 09:40 | Liang E S / Okuno A v Hayashi/Shimizu | 6-2,5-7,10-6 |
| ITF W25 Yokohama WD | 2019/03/06 08:45 | Nagata A / Nishimoto M v Hayashi/Shimizu | 2-6,4-6 |
| Osaka, Doubles W-ITF-JPN-02A | 2019/03/01 05:10 | Liang E S / Sema E v Hayashi/Shimizu | 4-6,6-3,10-7 |
| Osaka, Doubles W-ITF-JPN-02A | 2019/02/27 05:25 | Hayashi/Shimizu v Choi J-H / Omae A | 6-4,6-7,10-8 |