Nicolas Massu defeated David Nalbandian 7-6 4-6 7-6 in the Buenos Aires quarter-final on clay. The upset overturned the form book — David Nalbandian came in leading the head-to-head 3–0, defending last year's round of 32. Nicolas Massu claimed a first win over David Nalbandian in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-08-11 | Beijing Olympics | R32 | hard | David Nalbandian | 7-6(0) 6-1 |
| 2004-10-25 | Basel | SF | hard | David Nalbandian | 6-3 6-4 |
| 2003-02-24 | Acapulco | R32 | hard | David Nalbandian | 2-6 6-1 6-4 |
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 (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About