Yudai Umeoka defeated Sota Tani 4-6 6-2 10-4 in the M15 Hinode 1 q64 on hard. The upset overturned the form book — Sota Tani came in leading the head-to-head 1–0. Yudai Umeoka claimed a first win over Sota Tani in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-05-28 | M15 Karuizawa 1 | Q32 | clay | Sota Tani | 7-6(4) 6-2 |