Catalina Castano defeated Mariana Diaz Oliva 6-3 6-3 in the Amelia Island round of 64 on clay. The upset overturned the form book — Mariana Diaz Oliva came in leading the head-to-head 1–0. Catalina Castano claimed a first win over Mariana Diaz Oliva in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-07-18 | Palermo | R16 | clay | Mariana Diaz Oliva | 6-1 7-6(6) |
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 (79 vs 22). ATP, WTA & Challenger.