Guillermo Canas defeated Alberto Martin 1-6 6-2 7-6 in the Stuttgart quarter-final on grass. The upset overturned the form book — Alberto Martin came in leading the head-to-head 4–2, defending last year's quarter-final. Guillermo Canas narrowed the head-to-head to 4–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-02-07 | Buenos Aires | R16 | clay | Alberto Martin | 6-4 6-3 |
| 2004-04-19 | Monte Carlo Masters | R64 | clay | Alberto Martin | 6-3 4-6 6-3 |
| 2001-05-28 | Roland Garros | R64 | clay | Guillermo Canas | 6-2 4-6 6-2 2-6 6-4 |
| 2000-07-17 | Umag | R32 | clay | Alberto Martin | 1-6 6-0 6-4 |
| 1999-04-26 | Atlanta | R16 | hard | Alberto Martin | 7-6(3) 7-6(4) |
| 1999-04-19 | Orlando | QF | clay | Guillermo Canas | 6-4 7-6(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.