Nathalie Vierin defeated Kathrin Woerle 6-1 6-2 in the Les Contamines 25K round of 32 on hard. The upset overturned the form book — Kathrin Woerle came in leading the head-to-head 2–1. Nathalie Vierin narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-03-16 | Cairo 25K | F | clay | Kathrin Woerle | 6-2 6-4 |
| 2004-09-13 | Sofia 25K | R32 | clay | Kathrin Woerle | 7-6(2) 6-0 |
| 2002-07-22 | Les Contamines 25K | R16 | hard | Nathalie Vierin | 7-5 6-3 |
Averages over each player's completed matches in the selected window (11 vs 16). 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