Agustin Calleri defeated David Nalbandian 6-4 6-1 in the Hamburg Masters semi-final on clay. The upset overturned the form book — David Nalbandian came in leading the head-to-head 4–0, defending last year's round of 64. Agustin Calleri claimed a first win over David Nalbandian in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-04-28 | Barcelona | R32 | clay | David Nalbandian | 1-6 7-6(2) 6-3 |
| 2003-03-03 | Scottsdale | R32 | hard | David Nalbandian | 7-6(3) 6-3 |
| 2002-10-21 | Basel | R16 | hard | David Nalbandian | 6-2 3-0 RET |
| 2002-05-27 | Roland Garros | R128 | clay | David Nalbandian | 6-2 5-7 6-2 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