Natalia Siedliska defeated Valentini Grammatikopoulou 3-6 7-5 6-1 in the Heraklion 10K round of 32 on carpet. The upset overturned the form book — Valentini Grammatikopoulou came in leading the head-to-head 2–0. Natalia Siedliska claimed a first win over Valentini Grammatikopoulou in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-07-06 | Versmold $50K | Q32 | clay | Valentini Grammatikopoulou | 6-1 7-5 |
| 2014-04-21 | Heraklion 10K | R16 | hard | Valentini Grammatikopoulou | 6-4 6-0 |
Averages over each player's completed matches in the selected window (174 vs 199). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About