Israel Vior Diaz defeated Nelson De Almeida 6-3 6-3 in the Portugal 1 Masters 2 round of 32 on clay. The upset overturned the form book — Nelson De Almeida came in leading the head-to-head 1–0. Israel Vior Diaz claimed a first win over Nelson De Almeida in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-05-01 | Portugal 1 3 | R32 | clay | Nelson De Almeida | 4-6 6-3 6-3 |