Sebastian Decoud defeated Diego Schwartzman 6-0 7-5 in the Argentina F3 qualifying round on clay. The upset overturned the form book — Diego Schwartzman came in leading the head-to-head 2–1. Sebastian Decoud narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-06-18 | Argentina F14 | SF | clay | Diego Schwartzman | 6-2 6-2 |
| 2012-04-30 | Argentina F9 | F | clay | Sebastian Decoud | 4-6 6-4 6-3 |
| 2011-01-31 | Colombia F1 | R32 | clay | Diego Schwartzman | 1-6 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.