Mariano Kestelboim defeated Oscar Jose Gutierrez 6-0 1-6 6-4 in the Argentina F6 round of 16 on clay. The upset overturned the form book — Oscar Jose Gutierrez came in ranked #695, leading the head-to-head 3–0. Mariano Kestelboim claimed a first win over Oscar Jose Gutierrez in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-08-25 | Argentina F15 | R16 | clay | Oscar Jose Gutierrez | 7-6(6) 6-3 |
| 2014-02-10 | Argentina F3 | Q32 | clay | Oscar Jose Gutierrez | 6-3 6-0 |
| 2013-11-25 | Brazil F18 | Q16 | clay | Oscar Jose Gutierrez | 6-3 4-6 6-4 |
Averages over each player's completed matches in the selected window (199 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About