
Mona Barthel defeated Simona Waltert 1-6 6-3 6-4 in the W100 Oeiras round of 16 on clay. The upset overturned the form book — Simona Waltert came in ranked #87, leading the head-to-head 2–1. Mona Barthel narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-04-24 | W100 Oeiras 1 | R16 | clay | Mona Barthel | 1-6 6-3 6-4 |
| 2023-08-22 | US Open | Q128 | hard | Simona Waltert | 6-2 6-4 |
| 2021-05-11 | W60+H La Bisbal D'Emporda | R32 | clay | Simona Waltert | 7-5 7-6(2) |
Averages over each player's completed matches in the selected window (109 vs 141). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Barthel M.: 14 days rest · 1 match (14d) · Waltert S.: 5 days rest · 2 matches, 47 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About