Luis Horna defeated Juan Monaco 6-3 6-4 in the Poertschach quarter-final on clay. The upset overturned the form book — Juan Monaco came in leading the head-to-head 3–2. Luis Horna narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-02-25 | Acapulco | R16 | hard | Luis Horna | 7-6(4) 6-3 |
| 2007-05-20 | Poertschach | SF | clay | Juan Monaco | 6-4 6-4 |
| 2007-02-19 | Buenos Aires | QF | clay | Juan Monaco | 4-6 6-2 6-3 |
| 2006-07-17 | Stuttgart | QF | grass | Juan Monaco | 5-2 RET |
| 2004-02-23 | Costa Do Sauipe | R16 | hard | Luis Horna | 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 (88 vs 200). ATP, WTA & Challenger.