Yukina Saigo defeated Rina Saigo 4-6 6-4 6-4 in the W15 Knokke 1 round of 16 on clay. The upset overturned the form book — Rina Saigo came in leading the head-to-head 2–0. Yukina Saigo claimed a first win over Rina Saigo in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-05-26 | W35 Changwon 1 | Q64 | hard | Rina Saigo | 6-1 6-0 |
| 2020-02-02 | W25 Nonthaburi | Q64 | hard | Rina Saigo | 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.