Gerald Mandl defeated Martijn Belgraver 6-2 7-5 in the Morocco Masters 1 round of 16 on clay. The upset overturned the form book — Martijn Belgraver came in leading the head-to-head 1–0. Gerald Mandl claimed a first win over Martijn Belgraver in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-05-19 | Germany F3 | R32 | clay | Martijn Belgraver | 6-3 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.