Antonio Pastorino defeated Juan Martin Aranguren 6-3 6-3 in the Germany F13 semi-final on clay. The upset overturned the form book — Juan Martin Aranguren came in leading the head-to-head 2–0. Antonio Pastorino claimed a first win over Juan Martin Aranguren in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-09-19 | Argentina F12 | R16 | clay | Juan Martin Aranguren | 6-4 6-4 |
| 2003-08-18 | Argentina F1 | R32 | clay | Juan Martin Aranguren | 2-6 6-2 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.