Gilbert Schaller defeated Nuno Marques 6-3 7-5 in the Estoril round of 16 on clay. The upset overturned the form book — Nuno Marques came in leading the head-to-head 3–0, defending last year's round of 32. Gilbert Schaller claimed a first win over Nuno Marques in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-05-01 | Portugal 1 Masters 1 | F | clay | Nuno Marques | 6-1 6-2 |
| 1999-05-01 | Portugal 1 Masters 2 | SF | clay | Nuno Marques | 6-4 6-3 |
| 1996-07-22 | Kitzbuhel | R32 | clay | Nuno Marques | 7-6(3) 6-3 |
Averages over each player's completed matches in the selected window (32 vs 15). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About