Albert Portas defeated David Nalbandian 6-3 6-4 in the Vina del Mar quarter-final on clay. The upset overturned the form book — David Nalbandian came in leading the head-to-head 2–0. Albert Portas claimed a first win over David Nalbandian in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-01 | Estoril | SF | clay | David Nalbandian | 7-5 6-1 |
| 2002-05-06 | Rome Masters | R64 | clay | David Nalbandian | 6-3 5-7 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (171 vs 200). ATP, WTA & Challenger.