Sebastian Decoud defeated Agustin Tarantino 6-2 6-3 in the Ecuador F3 semi-final on hard. The upset overturned the form book — Agustin Tarantino came in leading the head-to-head 3–1. Sebastian Decoud narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-01-24 | Colombia F1 | SF | hard | Agustin Tarantino | 4-6 6-3 6-1 |
| 2002-04-29 | Mexico F5 | R16 | hard | Agustin Tarantino | 6-4 6-2 |
| 2001-09-24 | Bolivia F2 | R16 | clay | Sebastian Decoud | 6-7(4) 7-6(4) 6-4 |
| 2001-04-23 | Argentina F4 | R32 | clay | Agustin Tarantino | 7-6(3) 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.