Nicolas Massu defeated David Sanchez 6-4 6-3 in the Valencia round of 16 on hard. The upset overturned the form book — David Sanchez came in leading the head-to-head 3–2. Nicolas Massu narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-07-18 | Amersfoort | QF | clay | David Sanchez | 6-3 4-6 6-3 |
| 2004-09-27 | Palermo | R32 | clay | Nicolas Massu | 6-3 6-2 |
| 2003-09-08 | Bucharest | F | clay | David Sanchez | 6-2 6-2 |
| 2003-03-03 | Scottsdale | R32 | hard | David Sanchez | 3-6 6-3 6-4 |
| 2002-02-18 | Buenos Aires | R16 | clay | Nicolas Massu | 6-4 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 (200 vs 117). ATP, WTA & Challenger.