Huib Troost defeated Nuno Marques 6-3 3-6 7-6 in the Portugal 2 Masters 4 round of 16 on clay. The upset overturned the form book — Nuno Marques came in leading the head-to-head 4–0. Huib Troost claimed a first win over Nuno Marques in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-01-31 | Portugal 1 Masters 1 | R16 | clay | Nuno Marques | 6-1 6-4 |
| 1997-11-22 | Portugal 5 Masters 2 | R16 | clay | Nuno Marques | 6-3 6-3 |
| 1994-11-26 | Portugal 4 Masters 4 | R16 | hard | Nuno Marques | 6-4 2-6 6-2 |
| 1993-04-30 | Portugal 2 Masters 4 | QF | clay | Nuno Marques | 6-4 2-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.