

Madison Keys defeated Mona Barthel 6-4 6-2 in the Wimbledon round of 64 on grass. The result followed the form book — Madison Keys came in ranked #23. Madison Keys extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-04 | Indian Wells | R64 | hard | Mona Barthel | 3-6 6-1 7-5 |
| 2013-06-10 | Birmingham | R16 | grass | Madison Keys | 6-3 6-2 |
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 (200 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Keys M.: 7 days rest · 1 match, 23 games (7d) · Barthel M.: 6 days rest · 1 match, 18 games (7d). Higher means fresher. About