Guido Ivan Justo defeated Fernando Cavallo 7-6 6-4 in the M15 Santiago 3 quarter-final on clay. The result followed the form book — Guido Ivan Justo came in ranked #233, leading the head-to-head 2–1. Guido Ivan Justo extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-07-31 | M15 Santiago 4 | R16 | clay | Fernando Cavallo | 7-5 1-0 |
| 2024-09-14 | M15 Cordoba 2 | SF | clay | Guido Ivan Justo | 6-3 6-1 |
| 2024-05-14 | M15 Neuquen 1 | R32 | clay | Guido Ivan Justo | 6-0 6-2 |
Averages over each player's completed matches in the selected window (102 vs 33). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About