Matthias Muller defeated Charles Edouard Maria 6-4 6-2 in the Switzerland 1 Masters 4 qualifying round on clay. The result followed the form book — Matthias Muller came in leading the head-to-head 2–0. Matthias Muller extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-03-01 | Egypt 1 Masters 3 | R32 | clay | Matthias Muller | 6-3 6-0 |
| 1998-10-24 | Turkey 3 Masters 2 | R16 | hard | Matthias Muller | 6-1 6-2 |