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 |
6 wins, 7 losses since 2021 (46.2%).
Last matches: D V D V V
70 wins, 87 losses since 2021 (44.6%).
Last matches: D V D V V
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.