Marko Tkalec advanced when Boris Borgula retired 2-1 in the Czech Rep F6 round of 32. Marko Tkalec extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-06-28 | Hungary F3 | R32 | clay | Marko Tkalec | 6-2 6-2 |
| 1998-05-02 | Croatia 2 Masters 4 | QF | clay | Boris Borgula | 6-4 6-3 |