Olivier Morel defeated Guillaume Marx 6-3 3-6 7-5 in the France F11 round of 32 on hard. The upset overturned the form book — Guillaume Marx came in leading the head-to-head 1–0. Olivier Morel claimed a first win over Guillaume Marx in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-01-31 | France 2 Masters 4 | QF | clay | Guillaume Marx | 6-4 6-2 |