Nadejda Vassileva defeated Nicole Clerico 6-2 6-2 in the Haskovo 10K qualifying round on clay. The upset overturned the form book — Nicole Clerico came in leading the head-to-head 1–0. Nadejda Vassileva claimed a first win over Nicole Clerico in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-08-11 | Bucharest 10K | R32 | clay | Nicole Clerico | 7-6(5) 6-2 |