Estádio: Court 3 Round: 25 Ground: Clay
| Challenger - Rio de Janeiro | 2021/12/13 16:00 | Gonzalo Villanueva v Kaichi Uchida | 3-6,4-6 |
| Challenger - Florianopolis | 2021/12/09 13:00 | Nicolas Barrientos v Gonzalo Villanueva | 7-6,6-1 |
| Challenger - Florianopolis | 2021/12/07 16:05 | Pedro Boscardin Dias v Gonzalo Villanueva | 6-4,5-7,2-6 |
| Challenger - São Paulo | 2021/11/30 16:55 | Facundo Diaz Acosta v Gonzalo Villanueva | 7-5,6-1 |
| Challenger - São Paulo | 2021/11/29 15:05 | Gonzalo Villanueva v Alejandro Gomez | 6-4,7-6 |
| Challenger - São Paulo | 2021/11/28 13:00 | Gonzalo Villanueva v Tomas Lipovsek Puches | 3-6,6-3,6-1 |
| Challenger - Brasília | 2021/11/21 14:35 | Gonzalo Villanueva v Luca Castelnuovo | 6-7,6-3,3-6 |
| Challenger - Campinas | 2021/11/14 16:00 | Hernan Casanova v Gonzalo Villanueva | 7-6,4-6,7-5 |
| Challenger - Buenos Aires | 2022/01/03 14:50 | Ignacio Carou v Alec Deckers | 3-6,6-2,6-7 |
| Challenger - Buenos Aires | 2022/01/02 13:00 | Lorenzo Gagliardo v Alec Deckers | 6-7,6-4,4-6 |
| ITF - M15 Heraklion | 2021/11/30 08:30 | Sandro Kopp v Alec Deckers | 6-4,3-6,6-4 |
| ITF - M15 Heraklion | 2021/11/23 07:00 | Alec Deckers v Alexandros Skorilas | 6-4,6-7,8-10 |
| ITF - M15 Heraklion | 2021/11/22 08:00 | Alec Deckers v Dennis Dragomirov | 6-2,6-2 |
| ITF - M15 Heraklion | 2021/11/21 11:00 | Alec Deckers v James Markiewicz | 6-4,6-4 |
| ITF - M15 Heraklion | 2021/11/17 07:00 | Alec Deckers v Lukas Krainer | 5-7,6-7 |
| ITF - M15 Heraklion | 2021/11/12 08:00 | Alastair Gray v Alec Deckers | 6-3,6-4 |