Daisuke Sumizawa defeated Yamato Sueoka 2-6 6-4 10-8 in the M25 Sapporo 2 q32 on hard. The upset overturned the form book — Yamato Sueoka came in leading the head-to-head 1–0. Daisuke Sumizawa claimed a first win over Yamato Sueoka in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-09-16 | M25 Takasaki 1 | Q16 | hard | Yamato Sueoka | 0-6 6-3 10-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.