| ITF - M15 Setúbal | 10/05 10:30 | 44 | Maximilian Neuchrist v Matheus P De Almeida | 4-6,4-6 | |
| ITF - M15 Setúbal | 10/04 13:00 | 44 | Matheus P De Almeida v Valentin De Carvalho | 6-0,6-0 | |
| ITF - M25 Porto | 09/30 14:45 | 25 | Gastao Elias v Matheus P De Almeida | 6-2,3-6,6-2 | |
| ITF - M25 Porto | 09/29 10:30 | 44 | Mateus Alves v Matheus P De Almeida | 2-6,6-7 | |
| ITF - M25 Porto | 09/28 09:00 | 44 | Matheus P De Almeida v Evan Furness | 6-7,6-3,12-10 | |
| ITF - M25 Porto | 09/27 09:30 | 44 | Francisco Cabral v Matheus P De Almeida | 6-7,3-6 | |
| ITF - M15 Castelo Branco | 09/22 09:00 | 44 | Otto Virtanen v Matheus P De Almeida | 6-4,6-3 | |
| ITF - M15 Castelo Branco | 09/21 09:00 | 44 | Rafael Giotis v Matheus P De Almeida | 3-6,1-6 | |
| ITF - M15 Sintra | 09/16 12:30 | 25 | Matheus P De Almeida v Benjamin Winter Lopez | 4-6,3-6 | |
| ITF - M15 Sintra | 09/14 15:55 | 44 | Matheus P De Almeida v Perry Gregg | 6-2,6-2 | |
| ITF - M15 Sintra | 09/14 10:00 | 44 | Alexis Musialek v Matheus P De Almeida | 5-7,6-7 | |
| ITF - M15 Sintra | 09/13 08:30 | 44 | Matheus P De Almeida v Noah Thurner | 6-4,6-0 | |
| ITF - M15 Sintra | 09/06 08:30 | 44 | Matheus P De Almeida v Diego A B Sanchez | 4-6,3-6 | |
| ITF - M15 Cancún | 11/23 14:00 | 28 | Matheus P De Almeida v Mateus Alves | 4-6,5-7 | |
| ITF - M15 Cancún | 11/22 14:00 | 27 | Matheus P De Almeida v Gage Brymer | 6-4,7-6 | |
| ITF - M15 Cancún | 11/21 18:00 | 26 | Christian Langmo v Matheus P De Almeida | 3-6,6-7 | |
| ITF - M15 Cancún | 11/19 17:55 | 25 | Tomas Lipovsek Puches v Matheus P De Almeida | 5-7,4-6 | |
| ITF - M15 Cancún | 11/12 17:00 | 25 | Matheus P De Almeida v Paul Jubb | 3-6,6-7 | |
| ITF - M15 Cancún | 11/05 16:40 | 25 | Joao L R Da Silva v Matheus P De Almeida | Retired | |
| ITF - M15 São Paulo | 10/15 16:55 | 25 | Matheus P De Almeida v Rafael Matos | 7-6,5-7,6-7 | |
| ITF - M25 Rio de Janeiro | 10/08 14:00 | 45 | Matheus P De Almeida v Igor Marcondes | 3-6,3-6 | |
| ITF - M25 Rio de Janeiro | 10/07 14:00 | 45 | Matheus P De Almeida v Bruno Stefani Figlio | 6-1,6-1 | |
| Challenger - Campinas | 09/30 20:40 | 24 | Matheus P De Almeida v Tomas Martin Etcheverry | 3-6,4-6 | |
| ITF - M15 Champaign | 09/14 16:00 | 28 | Matheus P De Almeida v Adam Walton | 6-4,3-6,3-6 | |
| ITF - M15 Champaign | 09/13 18:00 | 27 | Matheus P De Almeida v Ezekiel Clark | 7-6,6-1 | |
| ITF - M15 Champaign | 09/12 17:30 | 26 | Matheus P De Almeida v Alexandre Rotsaert | 4-6,6-4,6-3 | |
| ITF - M15 Champaign | 09/11 16:00 | 25 | Takuto Niki v Matheus P De Almeida | 1-6,5-7 | |
| ITF - M15 Lambaré | 08/21 17:05 | 25 | Fermin Tenti v Matheus P De Almeida | 4-6,7-5,6-2 | |
| ITF - M15 Alkmaar | 06/26 08:00 | 25 | Matias Zukas v Matheus P De Almeida | 6-1,6-4 | |
| ITF - M15 Balatonalmádi | 06/19 08:00 | 25 | Pascal Meis v Matheus P De Almeida | 7-5,6-7,6-4 |