Sandra Kloesel defeated Nathalie Vierin 6-2 6-2 in the Ortisei 75K round of 32 on carpet. The upset overturned the form book — Nathalie Vierin came in leading the head-to-head 2–1. Sandra Kloesel narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-04-24 | Cagnes sur Mer 75K | R32 | clay | Sandra Kloesel | 3-6 6-3 6-2 |
| 2004-06-28 | Vaihingen 25K | SF | clay | Nathalie Vierin | 7-5 6-4 |
| 2004-05-24 | Roland Garros | Q128 | clay | Nathalie Vierin | 6-4 4-6 6-2 |
Averages over each player's completed matches in the selected window (22 vs 11). 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