Sandra Martinovic defeated Radoslava Topalova 6-7 6-1 6-1 in the Belgrade 10K round of 32 on clay. The upset overturned the form book — Radoslava Topalova came in leading the head-to-head 1–0. Sandra Martinovic claimed a first win over Radoslava Topalova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-10-25 | Kastoria 10K | R32 | carpet | Radoslava Topalova | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.