Yahiya Doumbia defeated Ulrich Seetzen 6-4 6-2 in the Tunisia Masters 1 qualifying round on clay. The upset overturned the form book — Ulrich Seetzen came in leading the head-to-head 1–0. Yahiya Doumbia claimed a first win over Ulrich Seetzen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-09-07 | France F5 | R16 | hard | Ulrich Seetzen | 6-2 6-1 |