Vasko Mladenov defeated Ivaylo Traykov 2-6 6-4 6-0 in the Bulgaria F5 round of 16 on clay. The upset overturned the form book — Ivaylo Traykov came in leading the head-to-head 1–0, but Vasko Mladenov had been the form player, winning 4 of their last 9 on clay. Vasko Mladenov claimed a first win over Ivaylo Traykov in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-05-28 | Bulgaria F4 | R16 | clay | Ivaylo Traykov | 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.