| Kofu, Singles Qualifying W-WITF-JPN-02A | 2017/03/25 02:00 | リー・ペイ・チ v So, Kumi | 4-6,7-5,2-6 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2017/03/19 01:00 | So, Kumi v ザオ,シャンシャン | 0-6,1-6 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2017/03/18 02:00 | So, Kumi v Yamaguchi, Makoto | 6-2,6-2 |
| ITF Women Hamamatsu | 2016/10/19 03:15 | Lykina, Ksenia v So, Kumi | 6-2,4-6,6-1 |
| Hamamatsu, Singles Qualifying W-C25-JPN-06A | 2016/10/17 02:30 | 吉岡 希紗 v So, Kumi | 5-7,6-3,4-6 |
| ITF Women Kyoto | 2016/09/05 01:00 | So, Kumi v 佐藤 久真莉 | 6-1,2-6,0-6 |
| ITF Women Noto Qual | 2016/08/28 05:00 | So, Kumi v 輿石 亜佑美 | 2-6,2-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2017/03/25 01:00 | Sakata, Kimika v Kato, Kei | 4-6,3-6 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2017/03/20 01:00 | Kato, Kei v Fujiwara, Rika | 3-6,0-6 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2017/03/19 01:00 | 高山千尋 高山千尋 v Kato, Kei | 1-6,2-6 |
| Yokohama, Singles Qualifying W-WITF-JPN-01B | 2017/03/06 04:00 | ミノコシ,マイ v Kato, Kei | 6-2,6-7,6-2 |
| ITF Women Hong Kong | 2016/12/24 02:00 | リュ,ミンヤン v Kato, Kei | 7-6,6-3 |
| ITF Women Hamamatsu | 2016/10/19 05:40 | Kato, Kei v アオヤマ・シュウコ | 2-6,0-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2016/10/13 00:30 | Kato, Kei v Lykina, Ksenia | 1-6,0-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2016/10/12 02:00 | Kato, Kei v Sakata, Kimika | 6-3,6-1 |