Ari Matsumoto defeated Nanari Katsumi 6-1 6-7 10-8 in the W25 Makinohara q16 on carpet. The upset overturned the form book — Nanari Katsumi came in leading the head-to-head 2–0. Ari Matsumoto claimed a first win over Nanari Katsumi in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-10-28 | W35 Makinohara 1 | Q16 | carpet | Nanari Katsumi | 4-6 6-4 10-7 |
| 2024-03-17 | W15 Hinode 1 | Q64 | hard | Nanari Katsumi | 6-2 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.