Alberto Martin defeated Guillermo Canas 6-4 6-3 in the Buenos Aires round of 16 on clay. The upset overturned the form book — Guillermo Canas came in defending last year's round of 32, but Alberto Martin had been the form player, winning 4 of their last 7 on clay. Alberto Martin extended the head-to-head to 4–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-04-19 | Monte Carlo Masters | R64 | clay | Alberto Martin | 6-3 4-6 6-3 |
| 2002-07-15 | Stuttgart | QF | grass | Guillermo Canas | 1-6 6-2 7-6(5) |
| 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 (154 vs 151). ATP, WTA & Challenger.