Level, 1 wins each over 2 singles meetings since 2024. Last meeting on 23/09/2026 at W50 Nanao.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 23/09/2026 | W50 Nanao | Round 1 | carpet | Itaya | 1-6 0-5 |
| 17/03/2024 | W15 Hinode | Qualifying 1 | hard | Chikaraishi |
| carpet | Itaya 1 - 0 Chikaraishi |
| hard | Itaya 0 - 1 Chikaraishi |
| 2026 | Itaya 1 - 0 Chikaraishi |
| 2024 | Itaya 0 - 1 Chikaraishi |
5 wins, 5 losses since 2021 (50.0%).
Last matches: V V D D D
67 wins, 85 losses since 2021 (44.1%).
Last matches: D D V D D
Level, 1 wins each over 2 singles meetings since 2024.
On 23/09/2026, at W50 Nanao (Round 1): Rion Itaya won 1-6 0-5.