Frederica Piedade defeated Julia Cohen 6-7 6-4 6-3 in the Mexico City 25K semi-final on hard. The upset overturned the form book — Julia Cohen came in leading the head-to-head 2–1, but Frederica Piedade had been the form player, winning 1 of their last 5 on hard. Frederica Piedade narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-10-30 | Mexico City 25K | R16 | hard | Julia Cohen | 6-4 6-3 |
| 2005-03-14 | Morelia 10K | R16 | hard | Frederica Piedade | 6-4 6-4 |
| 2005-03-07 | Toluca 10K | SF | hard | Julia Cohen | 6-2 7-5 |
Averages over each player's completed matches in the selected window (1 vs 28). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About