Stadium: Court 5 Round: 44
| ITF M25 Portoviejo | 2021/07/28 14:30 | Jose Pereira v Cristobal Castro | 6-2,6-1 |
| ITF M25 Portoviejo | 2021/07/26 17:45 | Andres Urrea v Cristobal Castro | 4-6,7-5,5-10 |
| ITF M25 Portoviejo | 2021/07/26 14:30 | Ignacio B Alia v Cristobal Castro | 3-6,4-6 |
| ITF M15 Villa Maria | 2021/03/29 12:30 | Nicolas Kicker v Cristobal Castro | 6-2,7-5 |
| ITF M15 Villa Maria | 2021/03/28 14:00 | Francisco Aranguren v Cristobal Castro | 2-6,3-6 |
| ITF M15 Santiago | 2019/09/30 12:00 | Victor Nunez v Cristobal Castro | 6-3,6-3 |
| ITF M15 La Paz | 2019/08/14 16:30 | Cristobal Castro v Octavio Volpi | 7-6,4-6,2-6 |
| ITF M15 La Paz | 2019/08/13 14:00 | Jose Daniel Bendeck v Cristobal Castro | 6-7,4-6 |