Riko Kikawada leads 2 to 1 over 3 singles meetings since 2023. Last meeting on 06/07/2026 at W15 Luan.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 06/07/2026 | W15 Luan | Qualifying 2 | hard | Kosaka | |
| 13/06/2023 | W15 Kawaguchi | Qualifying 1 | hard | Kikawada | |
| 24/04/2023 | W15 Fukui | Qualifying 1 | hard | Kikawada |
| hard | Kikawada 2 - 1 Kosaka |
| 2026 | Kikawada 0 - 1 Kosaka |
| 2023 | Kikawada 2 - 0 Kosaka |
51 wins, 68 losses since 2021 (42.9%).
Last matches: D V D V V
22 wins, 20 losses since 2021 (52.4%).
Last matches: V D V V D
Riko Kikawada leads 2 to 1 over 3 singles meetings since 2023.
On 06/07/2026, at W15 Luan (Qualifying 2): Rira Kosaka won.