Marko Tkalec defeated Thorsten Wolff 6-3 6-2 in the Croatia 2 Masters 4 round of 32 on clay. The upset overturned the form book — Thorsten Wolff came in leading the head-to-head 1–0. Marko Tkalec claimed a first win over Thorsten Wolff in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-10-24 | Turkey 3 Masters 3 | R32 | hard | Thorsten Wolff | 4-6 7-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.