Nadia Petrova defeated Conchita Martinez 6-4 7-6 in the Zurich round of 32 on hard. The upset overturned the form book — Conchita Martinez came in leading the head-to-head 2–1. Nadia Petrova narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-04-12 | Charleston | QF | clay | Conchita Martinez | 6-3 6-1 |
| 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 (200 vs 4). ATP, WTA & Challenger.