| ITF M25 Lima | 02/11 15:00 | 25 | [473] Rafael Matos v Mariano Kestelboim [493] | 5-7,6-4,2-6 | |
| ITF M25 Lima | 02/06 14:55 | 26 | [347] Marcelo Tomas Barrios Vera v Mariano Kestelboim [492] | 6-4,6-3 | |
| ITF M25 Lima | 02/05 14:50 | 25 | [492] Mariano Kestelboim v Rafael Matos [472] | 6-4,6-3 | |
| ITF M25 Lima | 02/03 16:35 | 44 | Mariano Kestelboim v Alejandro Mendoza | 6-0,6-0 | |
| ITF M25 Lima | 02/02 18:00 | 44 | Mariano Kestelboim v Jesus Echevarri | 6-1,6-0 | |
| Challenger Punta del Este | 01/30 00:00 | 25 | Mariano Kestelboim v Thiago Monteiro | 4-6,4-6 | |
| Challenger Punta del Este | 01/27 17:45 | 24 | [378] Oscar Jose Gutierrez v Mariano Kestelboim [500] | 4-6,6-3,5-7 | |
| ITF M15 Maldonado | 12/01 13:00 | 29 | Santiago F R Taverna v Mariano Kestelboim | 3-6,6-2,6-1 | |
| ITF M15 Maldonado | 11/30 13:30 | 28 | Francisco Comesana v Mariano Kestelboim | 5-7,3-6 | |
| ITF M15 Maldonado | 11/29 13:00 | 27 | Franco Emanuel Egea v Mariano Kestelboim | 4-6,3-6 | |
| ITF M15 Maldonado | 11/28 15:00 | 26 | Nicolas Bruna v Mariano Kestelboim | 2-6,6-3,0-6 | |
| ITF M15 Maldonado | 11/26 13:30 | 25 | Esteban Bruna v Mariano Kestelboim | 4-6,2-6 | |
| ITF - M15 Cancún | 11/19 14:00 | 25 | Mariano Kestelboim v Connor Farren | 3-6,4-6 | |
| ITF - M15 Cancún | 11/16 18:50 | 27 | Tigre Hank v Mariano Kestelboim | 3-6,6-3,6-4 | |
| ITF - M15 Cancún | 11/16 13:45 | 26 | Luis Patino v Mariano Kestelboim | 2-6,7-5,1-6 | |
| ITF - M15 Cancún | 11/15 19:35 | 25 | Issei Okamura v Mariano Kestelboim | 4-6,1-6 | |
| ITF M25 Naples | 11/01 17:45 | 27 | Adrian Andreev v Mariano Kestelboim | 6-3,7-6 | |
| ITF M25 Naples | 10/31 17:00 | 26 | Santiago F R Taverna v Mariano Kestelboim | 2-6,3-6 | |
| ITF M25 Naples | 10/30 15:55 | 25 | [408] Alexander Cozbinov v Mariano Kestelboim [404] | 6-4,2-6,4-6 | |
| ITF - M15 Cancún | 10/26 14:15 | 28 | Cristian Rodriguez v Mariano Kestelboim | 6-3,7-6 | |
| ITF - M15 Cancún | 10/25 14:15 | 27 | Tigre Hank v Mariano Kestelboim | 6-4,1-6,2-6 | |
| ITF - M15 Cancún | 10/24 14:00 | 26 | Tyler Mercier v Mariano Kestelboim | 0-6,6-7 | |
| ITF - M15 Cancún | 10/23 17:00 | 25 | Nicholas Bybel v Mariano Kestelboim | 7-5,2-6,0-6 | |
| ITF - M15 Cancún | 10/19 14:15 | 28 | Tigre Hank v Mariano Kestelboim | 7-5,2-6,6-4 | |
| ITF - M15 Cancún | 10/18 14:15 | 27 | Federico Zeballos v Mariano Kestelboim | 2-6,3-6 | |
| ITF - M15 Cancún | 10/17 14:00 | 26 | Charles Force v Mariano Kestelboim | 1-6,6-2,3-6 | |
| ITF - M15 Cancún | 10/15 14:00 | 25 | Matt McBride v Mariano Kestelboim | 1-6,3-6 | |
| ITF - M15 Cancún | 10/11 14:00 | 27 | Alec Adamson v Mariano Kestelboim | 7-5,7-6 | |
| ITF - M15 Cancún | 10/10 14:00 | 26 | Mauricio Astorga v Mariano Kestelboim | 2-6,2-6 | |
| ITF - M15 Cancún | 10/08 17:30 | 25 | Jose Daniel Bendeck v Mariano Kestelboim | 1-6,2-6 |