Ivaylo Traykov defeated Javier Perez Vazquez 7-5 6-3 in the Yugoslavia F6 qualifying round on clay. The upset overturned the form book — Javier Perez Vazquez came in leading the head-to-head 1–0. Ivaylo Traykov claimed a first win over Javier Perez Vazquez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-08-10 | Yugoslavia F5 | F | clay | Javier Perez Vazquez | 6-4 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.