| Challenger Buenos Aires | 10/17 15:35 | 14 | Mariano Kestelboim v Valerio Aboian | 6-1,6-2 | |
| Challenger 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 | |
| ITF M25 Eupen | 09/08 07:30 | 25 | Mariano Kestelboim v Niklas Schell | 6-3,6-3 | |
| ITF M25 Lesa | 08/25 09:00 | 25 | Jean Thirouin v Mariano Kestelboim | Cancelled | |
| ITF M25 Ueberlingen | 08/17 15:00 | 25 | [416] Mariano Kestelboim v Ryan Harrison [257] | 3-6,6-4,2-6 | |
| ITF M25 Francoforte sul Meno | 08/13 09:50 | 27 | [417] Mariano Kestelboim v Yshai Oliel [450] | 2-6,2-6 | |
| ITF M25 Francoforte sul Meno | 08/12 11:10 | 26 | Taiyo Yamanaka v Mariano Kestelboim | 2-6,2-6 | |
| ITF M25 Francoforte sul Meno | 08/10 13:15 | 25 | Mariano Kestelboim v Valentin Royer | 6-4,7-6 | |
| ITF M25 Wetzlar | 08/04 08:00 | 25 | Mariano Kestelboim v Mats Rosenkranz | 5-7,2-6 | |
| ITF M25 Gandia | 07/24 15:00 | 28 | [391] Antoine Escoffier v Mariano Kestelboim [416] | 5-7,6-4,6-2 | |
| ITF M25 Gandia | 07/23 08:00 | 27 | Facundo Juarez v Mariano Kestelboim | 4-6,6-4,2-6 | |
| ITF M25 Gandia | 07/22 09:55 | 26 | Mariano Kestelboim v Jordi Mas De Ugarte | Retired | |
| ITF M25 Gandia | 07/21 07:30 | 25 | Imanol L Morillo v Mariano Kestelboim | 7-5,3-6,4-6 | |
| ITF M15 Poprad | 07/06 09:35 | 25 | Mariano Kestelboim v Marco Miceli | 6-1,3-6,2-6 | |
| ITF M15 Antalya | 07/02 06:20 | 27 | Francisco Comesana v Mariano Kestelboim | 6-2,6-1 | |
| ITF M15 Antalya | 07/01 06:30 | 26 | Ignacio Carou v Mariano Kestelboim | 3-6,5-7 | |
| ITF M15 Antalya | 06/29 08:25 | 25 | Andrey Chepelev v Mariano Kestelboim | 6-7,7-5,1-6 | |
| ITF M15 Antalya | 06/26 07:00 | 28 | Mariano Kestelboim v Facundo Juarez | 1-6,4-6 | |
| ITF M15 Antalya | 06/25 06:50 | 27 | Mariano Kestelboim v Ignacio Carou | 7-6,6-3 | |
| ITF M15 Antalya | 06/24 07:00 | 26 | [391] Yu Hsiou Hsu v Mariano Kestelboim [445] | 4-6,2-6 | |
| ITF M15 Antalya | 06/23 08:40 | 25 | [467] Oleg Prihodko v Mariano Kestelboim [448] | 7-5,3-6,2-6 | |
| ITF M15 Antalya | 06/18 07:30 | 27 | Mariano Kestelboim v Gonzalo Lama | 2-6,2-6 | |
| ITF M15 Antalya | 06/17 07:25 | 26 | Mariano Kestelboim v Anatoliy Petrenko | 6-1,6-0 | |
| ITF M15 Antalya | 06/15 07:30 | 25 | [387] Jan Satral v Mariano Kestelboim [448] | Retired | |
| ITF M15 Antalya | 06/09 10:40 | 25 | Mariano Kestelboim v Timo Stodder | 3-6,3-6 | |
| ITF M15 Monastir | 05/18 12:35 | 25 | Mariano Kestelboim v Guy Orly Iradukunda | 1-6,4-6 | |
| ITF M15 Monastir | 05/11 08:30 | 25 | [422] Mariano Kestelboim v Yunseong Chung [428] | 7-6,1-6,2-6 |