Sina Herrmann defeated Vlada Katic 6-3 6-1 in the W25+H Leipzig q32 on clay. The upset overturned the form book — Vlada Katic came in leading the head-to-head 1–0. Sina Herrmann claimed a first win over Vlada Katic in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-08-28 | W40 Oldenzaal | Q32 | clay | Vlada Katic | 6-3 3-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.