Yuki Karatsu defeated Anthony Shumsky 6-3 6-2 in the M15 Karuizawa 1 q32 on clay. The result followed the form book — Yuki Karatsu came in leading the head-to-head 1–0. Yuki Karatsu extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-07-27 | M15 Wuning 2 | Q64 | hard | Yuki Karatsu | 6-4 6-1 |