Head to Head
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/18 01:00 | 사카츠메, 히메노 v Kato, Kei | 3-6,3-6 |
Home History
| ITF Women Osaka Qual | 2018/04/08 02:00 | Chiang, Yuki Kristina v Kato, Kei | 3-6,6-4,6-2 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/24 03:00 | 세마, 에리카 v Kato, Kei | 4-6,6-3,6-0 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/19 01:00 | 아이카와, 마유카 v Kato, Kei | 6-3,3-6,6-1 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/18 01:00 | 사카츠메, 히메노 v Kato, Kei | 3-6,3-6 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/17 04:00 | Kato, Kei v 코시이시, 아유미 | 7-5,6-4 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | 아키타, 시호 v Kato, Kei | 6-0,6-3 |
| Tokyo, Singles Qualifying W-C100-JPN-01A | 2017/11/04 01:00 | Kato, Kei v 키날드, 토리 | 7-6,3-6,1-6 |
| Hamamatsu, Singles Qualifying W-C25-JPN-06A | 2017/10/17 06:00 | Kato, Kei v 카주루, 안쥬 오바이 | 1-6,4-6 |
Away History
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/18 01:00 | 사카츠메, 히메노 v Kato, Kei | 3-6,3-6 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/17 04:00 | Terami, Karin v 사카츠메, 히메노 | 4-6,5-7 |
| ITF Women Noto Qual | 2016/08/28 05:00 | 시미즈, 아야노 v 사카츠메, 히메노 | 6-2,6-2 |
| ITF Women Noto Qual | 2016/08/28 01:00 | 사이고, 리나 v 사카츠메, 히메노 | 6-2,3-6,4-6 |