Alejo Lorenzo Lingua Lavallen defeated Mariano Kestelboim 6-3 7-6 in the M15 Neuquen 1 final on clay. The upset overturned the form book — Mariano Kestelboim came in ranked #736, leading the head-to-head 3–0, but Alejo Lorenzo Lingua Lavallen had been the form player, winning 6 of their last 10 on clay. Alejo Lorenzo Lingua Lavallen claimed a first win over Mariano Kestelboim in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-03-28 | M25 Lujan 1 | QF | clay | Mariano Kestelboim | 7-5 6-4 |
| 2025-02-27 | M25 Yerba Buena 1 | R16 | clay | Mariano Kestelboim | 6-3 7-6(8) |
| 2023-09-07 | M15 Olavarria 1 | R16 | clay | Mariano Kestelboim | 6-3 6-2 |
Averages over each player's completed matches in the selected window (35 vs 78). 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