Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF - Hinode W15 | 2023/03/21 01:00 | Karen Tsutsumi v Shiori Kaneyama | 6-1,6-1 |
| ITF - Hinode W15 | 2023/03/20 03:00 | Nagomi Higashitani v Karen Tsutsumi | 5-7,3-6 |
| ITF - Hinode W15 | 2023/03/19 01:00 | Karen Tsutsumi v Michiru Furuya | 6-2,6-1 |
| ITF - Yokohama W25 | 2022/11/09 01:00 | Karen Tsutsumi v Sakura Hosogi | 2-6,4-6 |
| ITF - Yokohama W25 | 2020/03/03 05:25 | Himeno Sakatsume v Karen Tsutsumi | 6-3,6-1 |
| ITF - Yokohama W25 | 2020/03/03 01:00 | Karen Tsutsumi v Yui Chikaraishi | 6-4,7-6 |
| ITF Women Hamamatsu | 2018/10/15 03:40 | Ayumi Koshiishi v Karen Tsutsumi | 6-2,6-1 |
| ITF Women Hamamatsu | 2018/10/14 04:00 | Karen Tsutsumi v Aoiko Goto | 4-6,7-5,6-1 |
| ITF - Kuching W15 | 2023/03/01 09:05 | Meiqi Guo v Honoka Kobayashi | 6-2,6-3 |
| ITF - Sharm El Sheikh W15 | 2023/02/08 11:45 | Linda Klimovicova v Honoka Kobayashi | 6-0,3-6,6-1 |
| ITF - Sharm El Sheikh W15 | 2023/02/02 07:30 | Ho Ching Wu v Honoka Kobayashi | 6-1,6-1 |
| ITF - Sharm El Sheikh W15 | 2023/02/01 15:00 | Honoka Kobayashi v Anastasiya Apalikhina | 6-3,6-2 |
| ITF - Nonthaburi W40 - Kwalifikacje | 2023/01/08 07:30 | Honoka Kobayashi v Mayuka Aikawa | 1-6,4-6 |
| ITF - Nonthaburi W40 | 2023/01/01 08:20 | Yeon Woo Ku v Honoka Kobayashi | 6-4,6-2 |
| ITF - Kyoto W60 | 2022/12/19 02:00 | Suzuho Oshino v Honoka Kobayashi | 6-2,6-4 |
| ITF - Tokio W60 | 2022/11/14 00:55 | Nagi Hanatani v Honoka Kobayashi | 6-1,6-4 |