Stadium: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Campos do Jordao | 2022/01/31 14:00 | Gruber, Caio v Gomes, Henrique Silvestre | 5-7,2-6 |
| ITF M15 Lambare | 2021/12/15 14:30 | Gruber, Caio v Pereira, Miguel Fernando | 1-6,0-6 |
| ITF M25 Aparecida De Goiania | 2021/11/11 19:40 | Gruber, Caio v Oscar Jose Gutierrez | 1-6,3-6 |
| ITF M25 Aparecida De Goiania | 2021/11/10 15:00 | Hernando J E Isnardi v Gruber, Caio | 2-6,6-3,4-6 |
| ITF M25 Aparecida De Goiania | 2021/11/08 14:30 | Gruber, Caio v Leonardo Bastos | 6-1,6-3 |
| ITF M25 Aparecida De Goiania | 2021/11/07 14:00 | Gruber, Caio v Victor Bini | 6-3,4-6,10-2 |
| ITF M15 Brasilia | 2021/11/01 14:30 | Gruber, Caio v Luis Rodrigues Batista | 6-7,4-6 |
| ITF M25 Rio do Sul | 2021/10/20 16:30 | Nicolas Zanellato v Gruber, Caio | 6-2,6-1 |
| ITF - M25 Vale Do Lobo | 2022/02/23 14:40 | Gabriel Decamps v Mario G Fernandez | 6-4,6-2 |
| ITF - M25 Vale Do Lobo | 2022/02/22 11:20 | Franco Emanuel Egea v Mario G Fernandez | 6-7,2-6 |
| ITF - M25 Vale Do Lobo | 2022/02/21 13:30 | Jaime Faria v Mario G Fernandez | 6-4,2-6,10-12 |
| ITF - M25 Vale Do Lobo | 2022/02/20 11:55 | Mario M Martin v Mario G Fernandez | 6-3,3-6,7-10 |
| ITF M15 Benicarlo | 2021/11/09 14:00 | Mario G Fernandez v Merida Aguilar, Daniel | 4-6,6-3,3-6 |
| ITF M15 Benicarlo | 2021/11/09 08:30 | Mario G Fernandez v Jorge Martinez Martinez | 4-6,1-6 |
| ITF M15 Benicarlo | 2021/11/07 13:30 | Mario G Fernandez v Jamie Krattiger | 6-4,6-1 |
| ITF M15 Madrid | 2021/10/26 09:30 | Ouahab, Lamine v Mario G Fernandez | 6-4,6-2 |