Antonella Serra Zanetti defeated Flavia Pennetta 7-5 6-4 in the Australian Open round of 128 on hard. The upset overturned the form book — Flavia Pennetta came in leading the head-to-head 4–0, defending last year's round of 128. Antonella Serra Zanetti claimed a first win over Flavia Pennetta in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-02-27 | Acapulco | R32 | hard | Flavia Pennetta | 6-4 6-2 |
| 2005-08-15 | Toronto | R32 | hard | Flavia Pennetta | 6-4 6-2 |
| 2005-07-18 | Palermo | R32 | clay | Flavia Pennetta | 6-2 7-5 |
| 2005-02-21 | Acapulco | SF | hard | Flavia Pennetta | 6-2 6-1 |
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 (20 vs 200). ATP, WTA & Challenger.