Guillermo Bujniewicz defeated Guillermo Carry 6-4 7-5 in the Bolivia F3 round of 32 on clay. The upset overturned the form book — Guillermo Carry came in leading the head-to-head 1–0, but Guillermo Bujniewicz had been the form player, winning 5 of their last 10 on clay. Guillermo Bujniewicz claimed a first win over Guillermo Carry in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-09-25 | Bolivia F3 | R16 | clay | Guillermo Carry | 6-4 6-2 |