Mariana Diaz Oliva defeated Catalina Castano 6-1 7-6 in the Palermo round of 16 on clay. The upset overturned the form book — Catalina Castano came in leading the head-to-head 1–0. Mariana Diaz Oliva claimed a first win over Catalina Castano in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-04-05 | Amelia Island | R64 | clay | Catalina Castano | 6-3 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 (19 vs 76). ATP, WTA & Challenger.