| ITF M25 Lesa | 08/26 16:30 | 27 | Mariano Kestelboim v Federico Arnaboldi | 4-6,3-6 | |
| ITF M25 Lesa | 08/25 11:25 | 26 | Mariano Kestelboim v Stefano D'Agostino | 6-3,6-3 | |
| ITF M25 Lesa | 08/23 13:20 | 25 | Simone Roncalli v Mariano Kestelboim | 4-6,2-6 | |
| ITF M15 Ueberlingen | 08/18 08:00 | 26 | Mariano Kestelboim v Christoph Negritu | 2-6,0-6 | |
| ITF M15 Ueberlingen | 08/17 12:00 | 25 | Mariano Kestelboim v Daniel Siniakov | 6-4,6-1 | |
| ITF M15 Bérgamo | 07/02 11:10 | 28 | Mariano Kestelboim v Gianmarco Ferrari | 2-6,2-6 | |
| ITF M15 Bérgamo | 07/01 14:55 | 27 | Mariano Kestelboim v Andrea Basso | 1-6,7-6,6-0 | |
| ITF M15 Bérgamo | 06/30 09:40 | 26 | [394] Samuel Vincent Ruggeri v Mariano Kestelboim [469] | 0-6,4-6 | |
| ITF M15 Bérgamo | 06/29 07:25 | 25 | [274] Alexander Cozbinov v Mariano Kestelboim [469] | 3-6,4-6 | |
| ITF M25 Grasse | 06/14 08:00 | 25 | [354] Yshai Oliel v Mariano Kestelboim [487] | 6-3,6-1 | |
| ITF M25 Ulcinj | 05/07 08:00 | 28 | [428] Mariano Kestelboim v Hamad Medjedovic [494] | 6-7,0-6 | |
| ITF M25 Ulcinj | 05/06 08:00 | 27 | [499] Samuel Vincent Ruggeri v Mariano Kestelboim [428] | 6-2,3-6,2-6 | |
| ITF M25 Ulcinj | 05/05 09:50 | 26 | Taisei Ichikawa v Mariano Kestelboim | 1-6,2-6 | |
| ITF M25 Ulcinj | 05/04 07:30 | 25 | [428] Mariano Kestelboim v Georgii Kravchenko [459] | 6-1,6-2 | |
| Challenger Buenos Aires | 04/25 13:30 | 19 | [292] Conner Huertas Del Pino v Mariano Kestelboim [427] | 6-7,6-1,6-1 | |
| Challenger Buenos Aires | 04/24 17:20 | 14 | Maximiliano Estevez v Mariano Kestelboim | 1-6,4-6 | |
| ITF M25 Rosario | 04/05 18:45 | 25 | Juan Bautista Otegui v Mariano Kestelboim | Retired | |
| ITF M25 Rosario | 04/01 14:00 | 27 | [221] Santiago F. R. Taverna v Mariano Kestelboim [431] | 6-4,6-0 | |
| ITF M25 Rosario | 03/31 13:00 | 26 | Arklon H D Pino v Mariano Kestelboim | 6-7,7-5,2-6 | |
| ITF M25 Rosario | 03/30 16:35 | 25 | Mariano Kestelboim v Kyle Seelig | 6-2,6-2 | |
| Challenger Buenos Aires | 01/04 15:15 | 25 | Mariano Kestelboim v Mariano Navone | Retired | |
| ITF M25 Villa Allende | 12/02 14:00 | 26 | Mariano Kestelboim v Ignacio Carou | 5-7,4-6 | |
| ITF M25 Villa Allende | 12/01 13:00 | 25 | [390] Mariano Kestelboim v Leonardo Aboian [481] | 7-5,6-3 | |
| ITF M15 Córdoba | 11/24 16:15 | 25 | Tomas Farjat v Mariano Kestelboim | 2-6,6-4,6-4 | |
| Challenger Buenos Aires | 10/18 15:00 | 19 | Mariano Kestelboim v Ignacio Monzon | 1-6,2-6 | |
| Challenger Buenos Aires | 10/17 15:35 | 14 | Mariano Kestelboim v Valerio Aboian | 6-1,6-2 | |
| Challenger de Murcia | 09/26 09:00 | 14 | [398] Mariano Kestelboim v Carlos Sanchez Jover [465] | 3-6,6-2,6-7 | |
| ITF M25 Madrid | 09/15 06:50 | 25 | Arnaud Bovy v Mariano Kestelboim | 7-6,6-2 | |
| ITF M25 Eupen | 09/10 11:30 | 27 | Mariano Kestelboim v Maxime Pauwels | 6-7,4-6 | |
| ITF M25 Eupen | 09/09 11:45 | 26 | [403] Mariano Kestelboim v Juan Ignacio Galarza [487] | 6-4,6-2 |