Miha Gregorc defeated Boris Borgula 0-6 7-5 6-1 in the Croatia 2 Masters 2 round of 32 on clay. The upset overturned the form book — Boris Borgula came in leading the head-to-head 1–0. Miha Gregorc claimed a first win over Boris Borgula in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-05-02 | Croatia 2 Masters 2 | R32 | clay | Boris Borgula | 6-4 7-5 |