Shinji Hazawa advanced when Ryotaro Matsumura retired 5-0 in the M15 Harmon 1 round of 32. Shinji Hazawa claimed a first win over Ryotaro Matsumura in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-10-24 | M15 Tanagura 1 | R16 | hard | Ryotaro Matsumura | 6-2 5-7 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.