Ivica Ancic defeated Mario Tudor 4-6 7-6 6-4 in the Croatia 4 Masters 1 qualifying round on clay. The upset overturned the form book — Mario Tudor came in leading the head-to-head 2–0. Ivica Ancic claimed a first win over Mario Tudor in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-08-18 | Croatia F5 | QF | clay | Mario Tudor | 6-3 6-1 |
| 1997-08-09 | Croatia 4 Masters 4 | R16 | clay | Mario Tudor | 1-6 6-2 6-4 |