Carlos Avellan defeated Sebastian Quintero 6-1 6-2 in the Bolivia F1 round of 16 on clay. The upset overturned the form book — Sebastian Quintero came in leading the head-to-head 2–0, but Carlos Avellan had been the form player, winning 4 of their last 6 on clay. Carlos Avellan claimed a first win over Sebastian Quintero in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-05-10 | Colombia F2 | R16 | clay | Sebastian Quintero | 7-5 3-6 6-4 |
| 2002-09-09 | Bolivia F1 | R32 | clay | Sebastian Quintero | 6-1 7-6(10) |