

Mona Barthel defeated Sonay Kartal 6-4 7-6 in the W75 Hamburg 1 final on hard. The upset overturned the form book — Sonay Kartal came in ranked #122. Mona Barthel extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-01-27 | W60 Sunderland | QF | hard | Mona Barthel | 6-1 6-2 |
Averages over each player's completed matches in the selected window (95 vs 74). ATP, WTA & Challenger.
Barthel M.: 7 days rest · 1 match, 21 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
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About