Agustin Calleri defeated Gustavo Kuerten 6-3 6-7 7-6 in the Buenos Aires round of 32 on clay. The upset overturned the form book — Gustavo Kuerten came in leading the head-to-head 4–0, defending the title. Agustin Calleri claimed a first win over Gustavo Kuerten in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-02-23 | Costa Do Sauipe | F | hard | Gustavo Kuerten | 3-6 6-2 6-3 |
| 2003-03-10 | Indian Wells Masters | R16 | hard | Gustavo Kuerten | 6-4 7-6(5) |
| 2001-05-28 | Roland Garros | R64 | clay | Gustavo Kuerten | 6-4 6-4 6-4 |
| 2000-02-28 | Santiago | QF | clay | Gustavo Kuerten | 6-4 6-1 |
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 153). ATP, WTA & Challenger.