Juan Martin Aranguren defeated Andrea Collarini 6-3 6-2 in the Argentina F14 semi-final on clay. The upset overturned the form book — Andrea Collarini came in leading the head-to-head 2–1. Juan Martin Aranguren narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-06-11 | Argentina F12 | QF | clay | Andrea Collarini | 6-1 6-3 |
| 2012-04-02 | Argentina F6 | SF | clay | Andrea Collarini | 6-0 6-4 |
| 2011-09-19 | Argentina F16 | QF | clay | Juan Martin Aranguren | 6-3 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.