Stadium: Court 3 Round: 25 Ground: Clay
| ITF M15 Villa Maria | 2021/03/30 13:55 | Francisco Llanes v Santiago De La Fuente | 5-7,6-0,10-7 |
| ITF M15 Villa Maria | 2021/03/29 12:30 | Santiago De La Fuente v Alan Postay | 6-2,6-0 |
| ITF M15 Cairo | 2021/01/11 08:00 | Santiago De La Fuente v Jaime Caldes | 6-4,3-6,5-10 |
| ITF M15 Cairo | 2021/01/10 08:00 | Nikita Kashirin v Santiago De La Fuente | 6-4,4-6,7-10 |
| ITF M15 Cairo | 2021/01/03 09:00 | Santiago De La Fuente v Maxence Beauge | 5-7,3-6 |
| ITF M25 Hurlingham | 2020/03/01 15:30 | Gonzalo Lama v Santiago De La Fuente | 6-3,6-2 |
| ITF Argentina F4 | 2018/09/02 15:30 | Francisco Comesana v Santiago De La Fuente | 6-1,6-4 |
| ITF Argentina F4 | 2018/09/01 17:30 | Santiago De La Fuente v Fernando Sierra | 6-4,6-2 |
| ITF M15 Villa Maria | 2021/04/02 13:55 | Mariano Kestelboim v Hernan Casanova | 6-1,4-6,2-6 |
| ITF M15 Villa Maria | 2021/04/01 15:30 | Mariano Kestelboim v Benjamin Dhoe | 6-3,6-3 |
| ITF M15 Villa Maria | 2021/03/31 15:10 | Mariano Kestelboim v Franco Emanuel Egea | 6-1,6-4 |
| ATP Cordoba | 2021/02/20 13:00 | Mariano Kestelboim v Camilo Ugo Carabelli | 0-6,4-6 |
| Challenger Concepcion | 2021/02/15 14:00 | Mariano Kestelboim v Vitaliy Sachko | 3-6,1-6 |
| Challenger Concepcion | 2021/02/14 16:00 | Guido Ivan Justo v Mariano Kestelboim | 3-6,6-4,3-6 |
| Challenger Sao Paulo | 2020/11/22 14:00 | Camilo Ugo Carabelli v Mariano Kestelboim | 6-3,6-2 |
| Challenger Sao Paulo | 2020/11/21 14:00 | Paulo A S Dos Santos v Mariano Kestelboim | 1-6,4-6 |