Sebastien De Chaunac defeated Jerome Loustalot 0-6 7-6 6-4 in the Switzerland 1 Masters 1 semi-final on clay. The result followed the form book — Sebastien De Chaunac came in leading the head-to-head 1–0. Sebastien De Chaunac extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-01-02 | France 1 Masters 4 | R32 | clay | Sebastien De Chaunac | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.