Mariano Kestelboim leads 4 to 1 over 5 singles meetings since 2021. Last meeting on 31/03/2025 at Campinas Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 31/03/2025 | Campinas Challenger | Round 1 | clay | Kestelboim | 7-5 6-1 |
| 18/05/2024 | M15 Neuquen | Semi-final | clay | Kestelboim | 7-6(4) 6-2 |
| 11/03/2024 | Santiago Challenger | Qualifiers | clay | Kestelboim | 6-2 4-6 6-1 |
| 08/09/2023 | M15 Olavarria | Quarter-final | clay | Justo | 6-3 3-6 1-6 |
| 15/02/2021 | Concepcion Challenger | Qualifying 1 | clay | Kestelboim |
| clay | Kestelboim 4 - 1 Justo |
| 2025 | Kestelboim 1 - 0 Justo |
| 2024 | Kestelboim 2 - 0 Justo |
| 2023 | Kestelboim 0 - 1 Justo |
| 2021 | Kestelboim 1 - 0 Justo |
119 wins, 99 losses since 2021 (54.6%).
Last matches: D D V D D
166 wins, 99 losses since 2021 (62.6%).
Last matches: D D V D V
Mariano Kestelboim leads 4 to 1 over 5 singles meetings since 2021.
On 31/03/2025, at Campinas Challenger (Round 1): Mariano Kestelboim won 7-5 6-1.