Adriana Gersi defeated Mariana Diaz Oliva 7-5 6-3 in the Rome round of 64 on clay. The upset overturned the form book — Mariana Diaz Oliva came in leading the head-to-head 2–0. Adriana Gersi claimed a first win over Mariana Diaz Oliva in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-07-23 | Sopot | R16 | clay | Mariana Diaz Oliva | 7-5 6-3 |
| 2001-01-15 | Australian Open | R128 | hard | Mariana Diaz Oliva | 6-4 5-7 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.