Vivienne Vierin defeated Diana Buzean 2-6 6-0 6-3 in the Velenje 10K round of 32 on clay. The upset overturned the form book — Diana Buzean came in leading the head-to-head 1–0. Vivienne Vierin claimed a first win over Diana Buzean in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-10-18 | Dubrovnik 10K | F | clay | Diana Buzean | 6-3 7-5 |