Diego Cristin defeated Jonathan Gonzalia 6-1 6-3 in the Ecuador F1 round of 32 on hard. The upset overturned the form book — Jonathan Gonzalia came in leading the head-to-head 3–0. Diego Cristin claimed a first win over Jonathan Gonzalia in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-02-01 | Argentina F2 | R32 | clay | Jonathan Gonzalia | 2-1 |
| 2008-09-01 | Argentina F9 | SF | clay | Jonathan Gonzalia | 6-3 6-1 |
| 2008-08-25 | Argentina F8 | R32 | clay | Jonathan Gonzalia | 6-4 7-6(7) |