Yukina Saigo defeated Marina Yudanov 0-6 7-5 6-4 in the W15 Knokke 1 quarter-final on clay. The upset overturned the form book — Marina Yudanov came in leading the head-to-head 1–0. Yukina Saigo claimed a first win over Marina Yudanov in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-04-01 | W25 Kashiwa | Q32 | hard | Marina Yudanov | 6-2 6-2 |