Martina Borecka defeated Valentini Grammatikopoulou 6-4 6-4 in the Stuttgart Stammheim $10K round of 16 on hard. The upset overturned the form book — Valentini Grammatikopoulou came in leading the head-to-head 1–0. Martina Borecka claimed a first win over Valentini Grammatikopoulou in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-07-06 | Versmold $50K | QF | clay | Valentini Grammatikopoulou | 7-6(4) 4-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.