Joaquin Jesus Monteferrario defeated Idio Escobar 5-7 6-4 6-4 in the Bolivia F4 round of 16 on clay. The upset overturned the form book — Idio Escobar came in leading the head-to-head 1–0. Joaquin Jesus Monteferrario claimed a first win over Idio Escobar in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-12-07 | Brazil F31 | R32 | clay | Idio Escobar | 4-6 6-3 6-0 |