Oscar Hernandez defeated Nicolas Almagro 6-2 1-6 6-3 in the Buenos Aires round of 32 on clay. The upset overturned the form book — Nicolas Almagro came in leading the head-to-head 2–1, defending last year's quarter-final. Oscar Hernandez narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-02-18 | Buenos Aires | R16 | clay | Nicolas Almagro | 6-2 2-6 6-3 |
| 2004-05-10 | Hamburg | Q16 | clay | Nicolas Almagro | 7-5 7-5 |
| 2002-07-08 | Spain F5 | R32 | clay | Oscar Hernandez | 6-4 0-6 6-4 |
Averages over each player's completed matches in the selected window (57 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About