Nadia Petrova defeated Mary Pierce 6-2 7-5 in the Berlin round of 16 on grass. The upset overturned the form book — Mary Pierce came in leading the head-to-head 2–1, defending last year's round of 64. Nadia Petrova narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-03-09 | Indian Wells | R16 | hard | Mary Pierce | 6-2 6-2 |
| 2004-08-15 | Olympics | R32 | hard | Mary Pierce | 6-2 6-1 |
| 2001-05-14 | Rome | R64 | clay | Nadia Petrova | 6-2 6-4 |
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 44). ATP, WTA & Challenger.