Alexandar Lazov defeated Ivaylo Traykov 6-2 7-5 in the Bulgaria F4 round of 16 on clay. The upset overturned the form book — Ivaylo Traykov came in leading the head-to-head 2–0. Alexandar Lazov claimed a first win over Ivaylo Traykov in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-05-04 | Bulgaria F1 | R32 | clay | Ivaylo Traykov | 6-3 6-2 |
| 2007-09-03 | Bulgaria F7 | R32 | clay | Ivaylo Traykov | 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.