| Challenger Florianopolis | 04/03 22:00 | 26 | [274] Matheus P De Almeida v Gianluca Mager [275] | Retired | |
| Challenger Florianopolis | 04/02 17:15 | 25 | [259] Liam Draxl v Matheus P De Almeida [274] | 4-6,1-6 | |
| Challenger Sao Leopoldo | 03/30 13:00 | 27 | [295] Matheus P De Almeida v Felipe M R Alves [134] | 6-3,5-7,6-7 | |
| Challenger Sao Leopoldo | 03/27 15:55 | 26 | Matheus P De Almeida v Juan C P Angelo | 6-2,2-6,7-5 | |
| Challenger Sao Leopoldo | 03/26 14:00 | 25 | [220] Geoffrey Blancaneaux v Matheus P De Almeida [295] | 3-6,2-6 | |
| Challenger Asuncion | 03/20 21:00 | 26 | [295] Matheus P De Almeida v Orlando Luz [371] | 5-7,1-6 | |
| Challenger Asuncion | 03/19 00:00 | 25 | [220] Geoffrey Blancaneaux v Matheus P De Almeida [295] | 6-3,3-6,4-6 | |
| Challenger Santiago | 03/12 20:15 | 25 | [478] Valerio Aboian v Matheus P De Almeida [304] | 6-4,6-4 | |
| Challenger Santa Cruz | 03/06 22:40 | 26 | [304] Matheus P De Almeida v Pedro Sakamoto [336] | 7-5,0-6,4-6 | |
| Challenger Santa Cruz | 03/04 21:15 | 25 | [304] Matheus P De Almeida v Andrea Collarini [283] | 6-1,6-1 | |
| ATP Rio De Janeiro | 02/18 20:00 | 19 | [314] Matheus P De Almeida v Corentin Moutet [145] | 4-6,3-6 | |
| ATP Rio De Janeiro | 02/17 21:10 | 14 | [96] Pedro Martinez v Matheus P De Almeida [314] | 3-6,4-6 | |
| ITF M25 Punta del Este | 02/08 12:55 | 26 | [490] Daniel Vallejo v Matheus P De Almeida [317] | 5-7,6-3,6-1 | |
| ITF M25 Punta del Este | 02/07 18:10 | 25 | Juan M F Buenaventura v Matheus P De Almeida | 2-6,5-7 | |
| Challenger Piracicaba | 02/03 15:30 | 28 | [103] Federico Coria v Matheus P De Almeida [343] | 7-5,7-6 | |
| Challenger Piracicaba | 02/02 16:25 | 27 | [308] Alexander Weis v Matheus P De Almeida [343] | 6-7,6-7 | |
| Challenger Piracicaba | 02/01 13:00 | 26 | [343] Matheus P De Almeida v Edoardo Lavagno [235] | 6-1,6-3 | |
| Challenger Piracicaba | 01/31 00:00 | 25 | [395] Damien Wenger v Matheus P De Almeida [343] | 2-6,4-6 | |
| Challenger Temuco | 11/29 15:40 | 26 | [224] Santiago R Taverna v Matheus P De Almeida [353] | 3-6,7-6,6-1 | |
| Challenger Temuco | 11/27 17:55 | 25 | [482] Bruno Kuzuhara v Matheus P De Almeida [353] | 6-3,3-6,3-6 | |
| Challenger Brasilia | 11/20 21:50 | 25 | [358] Matheus P De Almeida v Nicolas Moreno De Alboran [155] | 3-6,3-6 | |
| Challenger Montevideo | 11/12 14:00 | 14 | [414] Pedro Sakamoto v Matheus P De Almeida [351] | 6-2,2-6,6-2 | |
| Challenger Lima | 11/07 15:00 | 25 | [351] Matheus P De Almeida v Roman A Burruchaga [225] | 1-6,2-6 | |
| Challenger Lima | 11/06 19:10 | 19 | [283] Renzo Olivo v Matheus P De Almeida [351] | 4-6,5-7 | |
| Challenger Lima | 11/05 18:20 | 14 | [344] Jorge Panta v Matheus P De Almeida [337] | 2-6,3-6 | |
| Challenger Guayaquil | 11/01 15:00 | 26 | [337] Matheus P De Almeida v Alejandro Tabilo [125] | 6-4,1-6,2-6 | |
| Challenger Guayaquil | 10/30 22:30 | 25 | Andres Andrade v Matheus P De Almeida | 3-6,4-6 | |
| Challenger Curitiba | 10/24 19:00 | 25 | [339] Matheus P De Almeida v Thiago Agustin Tirante [117] | 2-6,6-3,1-6 | |
| Challenger Campinas | 10/03 17:10 | 25 | [169] Luciano Darderi v Matheus P De Almeida [342] | 6-1,6-4 | |
| Challenger Bogota | 09/29 16:00 | 27 | [342] Matheus P De Almeida v Gustavo Heide [284] | 4-6,2-6 |