Blaz Trupej defeated Marko Tkalec 6-4 6-4 in the Croatia F6 qualifying round on clay. The upset overturned the form book — Marko Tkalec came in leading the head-to-head 1–0. Blaz Trupej claimed a first win over Marko Tkalec in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-07-12 | Slovenia Masters 1 | R16 | clay | Marko Tkalec | 7-6 4-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.