Polona Hercog defeated Stefanie Voegele 7-5 7-5 in the Portoroz quarter-final on hard. The result followed the form book — Polona Hercog came in leading the head-to-head 2–1, defending last year's round of 32. Polona Hercog extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-02-18 | Dubai | R64 | hard | Stefanie Voegele | 6-3 6-2 |
| 2014-04-28 | Oeiras | R32 | clay | Polona Hercog | 2-6 6-2 6-4 |
| 2009-05-21 | Roland Garros | Q64 | clay | Polona Hercog | 7-6(5) 7-6(2) |
Averages over each player's completed matches in the selected window (200 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About