
Andrea Petkovic defeated Mona Barthel 6-2 6-2 in the Washington round of 16 on hard. The upset overturned the form book — Mona Barthel came in leading the head-to-head 1–0. Andrea Petkovic claimed a first win over Mona Barthel in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-08-03 | Stanford | R16 | hard | Mona Barthel | 5-7 6-2 7-6(4) |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.