Mihaela Buzarnescu defeated Sabina Lupu 6-3 6-1 in the Bucharest 10K round of 32 on clay. The upset overturned the form book — Sabina Lupu came in leading the head-to-head 1–0. Mihaela Buzarnescu claimed a first win over Sabina Lupu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-05-23 | Bucharest 10K | R16 | clay | Sabina Lupu | 2-6 6-3 2-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.