Rafael Nadal defeated Gaston Gaudio 6-3 6-0 in the Monte Carlo Masters quarter-final on clay. The upset overturned the form book — Gaston Gaudio came in leading the head-to-head 3–2, defending last year's round of 32, but Rafael Nadal had been the form player, winning 5 of their last 9 on clay. Rafael Nadal narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-04-17 | Monte Carlo Masters | SF | clay | Rafael Nadal | 5-7 6-1 6-1 |
| 2005-07-18 | Stuttgart | F | grass | Rafael Nadal | 6-3 6-3 6-4 |
| 2005-02-07 | Buenos Aires | QF | clay | Gaston Gaudio | 0-6 6-0 6-1 |
| 2004-07-05 | Bastad | QF | clay | Gaston Gaudio | 6-2 6-3 |
| 2003-05-12 | Hamburg Masters | R16 | clay | Gaston Gaudio | 6-2 6-2 |
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 150). ATP, WTA & Challenger.