Nathalie Vierin defeated Valentina Sassi 6-3 6-3 in the Biella 50K round of 16 on clay. Nathalie Vierin extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-05-03 | Catania 25K | R32 | clay | Nathalie Vierin | 4-6 6-3 6-0 |
| 1999-11-08 | Le Havre 10K | R16 | clay | Valentina Sassi | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.