Ayaka Ozeki defeated Yukina Saigo 4-6 6-0 10-4 in the W25 Makinohara q16 on carpet. The upset overturned the form book — Yukina Saigo came in leading the head-to-head 2–0. Ayaka Ozeki claimed a first win over Yukina Saigo in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-06-12 | W15 Tokyo 2 | R32 | hard | Yukina Saigo | 7-5 7-6(5) |
| 2023-05-25 | W25 Karuizawa | R32 | grass | Yukina Saigo | 6-1 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.