Haruka Kaji leads 4 to 0 over 4 singles meetings since 2022. Last meeting on 22/11/2024 at W100 Takasaki.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 22/11/2024 | W100 Takasaki | Round 2 | hard | Kaji | 6-4 6-1 |
| 19/07/2023 | W40 Porto | Round 2 | hard | Kaji | 6-1 6-3 |
| 29/06/2023 | W25 Hong Kong | Round 2 | hard | Kaji | 6-2 6-4 |
| 02/10/2022 | W25 Nanao | Final | carpet | Kaji | 3-6 6-3 6-3 |
| hard | Kaji 3 - 0 Kobori |
| carpet | Kaji 1 - 0 Kobori |
| 2024 | Kaji 1 - 0 Kobori |
| 2023 | Kaji 2 - 0 Kobori |
| 2022 | Kaji 1 - 0 Kobori |
167 wins, 137 losses since 2021 (54.9%).
Last matches: D V D V D
120 wins, 101 losses since 2021 (54.3%).
Last matches: D V D V D
Haruka Kaji leads 4 to 0 over 4 singles meetings since 2022.
On 22/11/2024, at W100 Takasaki (Round 2): Haruka Kaji won 6-4 6-1.