Michael Quintero defeated Sergio Ramirez 6-3 4-6 7-6 in the Colombia F6 round of 16 on clay. The upset overturned the form book — Sergio Ramirez came in leading the head-to-head 1–0, but Michael Quintero had been the form player, winning 3 of their last 7 on clay. Michael Quintero claimed a first win over Sergio Ramirez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-02-06 | Panama F1 | QF | clay | Sergio Ramirez | 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.