Gaston Giussani defeated Antonio Pastorino 4-6 6-2 6-3 in the Bolivia F1 semi-final on clay. The upset overturned the form book — Antonio Pastorino came in leading the head-to-head 1–0. Gaston Giussani claimed a first win over Antonio Pastorino in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-09-08 | Argentina F10 | R32 | clay | Antonio Pastorino | 4-6 6-4 6-2 |