Guido Pella defeated Mauricio Estivariz 6-2 6-3 in the Bolivia F2 round of 32 on clay. The upset overturned the form book — Mauricio Estivariz came in leading the head-to-head 1–0, but Guido Pella had been the form player, winning 1 of their last 4 on clay. Guido Pella claimed a first win over Mauricio Estivariz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-09-15 | Bolivia F2 | R16 | clay | Mauricio Estivariz | 6-4 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.