Nathalie Vierin defeated Flavia Pennetta 6-3 6-4 in the Bari 25K round of 16 on clay. The upset overturned the form book — Flavia Pennetta came in leading the head-to-head 2–0. Nathalie Vierin claimed a first win over Flavia Pennetta in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-02-19 | Bogota | QF | clay | Flavia Pennetta | 6-2 4-2 |
| 2002-09-30 | Girona 50K | R32 | clay | Flavia Pennetta | 6-4 3-6 6-2 |
Averages over each player's completed matches in the selected window (11 vs 200). 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