Alberto Martin defeated Felix Mantilla 5-7 6-4 7-6 in the Buenos Aires quarter-final on clay. The upset overturned the form book — Felix Mantilla came in leading the head-to-head 4–0, but Alberto Martin had been the form player, winning 5 of their last 8 on clay. Alberto Martin claimed a first win over Felix Mantilla in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-05-12 | Hamburg Masters | R64 | clay | Felix Mantilla | 6-0 6-4 |
| 2003-02-10 | Vina del Mar | R32 | clay | Felix Mantilla | 6-1 6-4 |
| 2001-04-23 | Barcelona | R64 | clay | Felix Mantilla | 7-5 6-3 |
| 1999-04-12 | Barcelona | R32 | clay | Felix Mantilla | 6-3 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 (154 vs 32). ATP, WTA & Challenger.