Katharina Hering defeated Rina Saigo 6-1 4-6 10-4 in the W25 Horb q16 on clay. The upset overturned the form book — Rina Saigo came in leading the head-to-head 2–0. Katharina Hering claimed a first win over Rina Saigo in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-01-30 | W15 Manacor 2 | R32 | clay | Rina Saigo | 6-4 7-6(1) |
| 2019-01-24 | W15 Manacor 1 | R32 | clay | Rina Saigo | 6-4 0-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.