Gisela Dulko defeated Aleksandra Wozniak 6-4 6-1 in the Monterrey round of 16 on hard. The upset overturned the form book — Aleksandra Wozniak came in leading the head-to-head 2–1, defending last year's round of 16, but Gisela Dulko had been the form player, winning 1 of their last 6 on hard. Gisela Dulko narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-07-14 | Fed Cup WG2 PO: ARG vs CAN | RR | clay | Aleksandra Wozniak | 0-6 6-2 6-2 |
| 2007-03-05 | Indian Wells | R128 | hard | Gisela Dulko | 6-4 6-3 |
| 2006-07-15 | Fed Cup WG2 PO: CAN vs ARG | RR | hard | Aleksandra Wozniak | 7-6(6) 6-3 |
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 (32 vs 95). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About