Polona Hercog defeated Kiki Bertens 6-4 6-4 in the Rome round of 32 on clay. The result followed the form book — Polona Hercog came in leading the head-to-head 2–1, defending last year's round of 64. Polona Hercog extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-05-31 | Roland Garros | R128 | clay | Polona Hercog | 6-1 3-6 6-4 |
| 2019-09-30 | Beijing | R16 | hard | Kiki Bertens | 7-6(6) 2-6 6-3 |
| 2012-08-20 | Dallas | R32 | hard | Polona Hercog | 6-4 0-0 RET |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (122 vs 29). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About