Luis Horna defeated Agustin Calleri 6-4 6-4 in the Vina del Mar round of 32 on clay. The upset overturned the form book — Agustin Calleri came in leading the head-to-head 5–3, but Luis Horna had been the form player, winning 2 of their last 5 on clay. Luis Horna narrowed the head-to-head to 5–4.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-02-25 | Acapulco | QF | hard | Luis Horna | 6-4 3-6 6-3 |
| 2008-02-18 | Buenos Aires | R16 | clay | Agustin Calleri | 3-6 6-2 6-2 |
| 2008-01-14 | Australian Open | R128 | hard | Agustin Calleri | 6-4 6-7(6) 6-3 6-4 |
| 2007-06-25 | Wimbledon | R128 | grass | Agustin Calleri | 6-2 7-6(4) 7-5 |
| 2006-02-27 | Acapulco | QF | hard | Luis Horna | 6-3 6-4 |
| 2004-03-01 | Acapulco | R32 | hard | Luis Horna | 7-6(5) 6-4 |
| 2004-02-23 | Costa Do Sauipe | SF | hard | Agustin Calleri | 6-4 5-7 6-1 |
| 2001-09-10 | Costa Do Sauipe | R32 | hard | Agustin Calleri | 6-0 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 (23 vs 51). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About