Conchita Martinez defeated Nadia Petrova 6-3 6-1 in the Charleston quarter-final on clay. The upset overturned the form book — Nadia Petrova came in leading the head-to-head 2–1. Conchita Martinez narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-10-17 | Zurich | R32 | hard | Nadia Petrova | 6-4 7-6(5) |
| 1999-10-18 | Kremlin Cup | R32 | carpet | Nadia Petrova | 6-1 6-4 |
| 1998-10-20 | Kremlin Cup | R16 | carpet | Conchita Martinez | 6-0 6-0 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (8 vs 200). ATP, WTA & Challenger.