| ATP - Santiago | 02/20 16:50 | 19 | [130] Nikola Milojevic v Matheus P De Almeida [278] | 3-6,7-6,4-6 | |
| ATP - Santiago | 02/19 19:00 | 14 | Matheus P De Almeida v Facundo Mena | 6-3,6-4 | |
| ATP - Rio de Janeiro | 02/13 19:00 | 19 | [282] Matheus P De Almeida v Daniel Elahi Galan [113] | 3-6,3-6 | |
| ATP - Rio de Janeiro | 02/12 19:00 | 14 | [92] Marco Cecchinato v Matheus P De Almeida [282] | 7-6,2-6,4-6 | |
| Challenger - Santa Cruz | 01/25 23:00 | 25 | [170] Fernando Verdasco v Matheus P De Almeida [285] | 6-4,6-1 | |
| Challenger - Rio De Janeiro | 12/14 13:00 | 25 | Roy Smith v Matheus P De Almeida | Cancelled | |
| Challenger - Florianopolis | 12/09 18:00 | 26 | [346] Genaro Alberto Olivieri v Matheus P De Almeida [286] | 6-1,7-5 | |
| Challenger - Florianopolis | 12/07 20:00 | 25 | [286] Matheus P De Almeida v Thiago Seyboth Wild [131] | 6-4,6-2 | |
| Challenger - Sao Paulo | 11/29 16:05 | 25 | [286] Matheus P De Almeida v Hugo Dellien [119] | 3-6,5-7 | |
| Challenger - Brasilia | 11/23 17:45 | 25 | [349] Genaro Alberto Olivieri v Matheus P De Almeida [270] | 2-6,6-2,6-4 | |
| Challenger - Campinas | 11/16 22:40 | 25 | [271] Matheus P De Almeida v Juan Manuel Cerundolo [89] | 6-4,5-7,1-6 | |
| Challenger - Montevideo | 11/10 23:15 | 26 | [70] Federico Coria v Matheus P De Almeida [272] | 6-0,6-3 | |
| Challenger - Montevideo | 11/08 20:45 | 25 | [141] Marcelo Tomas Barrios-Vera v Matheus P De Almeida [272] | 4-6,5-7 | |
| Challenger - Bogota | 10/22 17:00 | 27 | [239] Jesper De Jong v Matheus P De Almeida [287] | 6-2,7-5 | |
| Challenger - Bogota | 10/20 15:00 | 26 | [287] Matheus P De Almeida v Alejandro Gonzalez [461] | 6-7,6-1,6-2 | |
| Challenger - Bogota | 10/19 15:00 | 25 | [337] Alexis Gautier v Matheus P De Almeida [287] | 2-6,1-6 | |
| Challenger - Santiago | 10/16 17:00 | 28 | [205] Felipe Meligeni Rodrigues Alves v Matheus P De Almeida [315] | 6-2,6-4 | |
| Challenger - Santiago | 10/15 19:40 | 27 | [315] Matheus P De Almeida v Francisco Cerundolo [110] | 7-6,2-6,6-4 | |
| Challenger - Santiago | 10/13 16:35 | 26 | [315] Matheus P De Almeida v Nicolas Kicker [276] | 3-6,6-2,6-4 | |
| Challenger - Santiago | 10/12 18:40 | 25 | [189] Enzo Couacaud v Matheus P De Almeida [315] | 1-6,1-6 | |
| Challenger - Santiago | 10/05 14:00 | 25 | [315] Matheus P De Almeida v Alexis Gautier [349] | 6-4,1-6,3-6 | |
| Challenger - Lima | 09/29 17:05 | 26 | [320] Matheus P De Almeida v Johan Nikles [380] | 6-7,4-6 | |
| Challenger - Lima | 09/27 20:15 | 25 | [110] Francisco Cerundolo v Matheus P De Almeida [320] | 2-6,4-6 | |
| Challenger - Kiev | 09/08 08:00 | 26 | [334] Matheus P De Almeida v Nuno Borges [283] | 6-2,2-6,5-7 | |
| Challenger - Kiev | 09/06 11:35 | 25 | [334] Matheus P De Almeida v Michael Vrbensky [317] | 6-3,6-2 | |
| Challenger - Como | 08/30 09:00 | 19 | [334] Matheus P De Almeida v Lucas Miedler [315] | 7-6,4-6,2-6 | |
| Challenger - Como | 08/29 10:00 | 14 | [311] Geoffrey Blancaneaux v Matheus P De Almeida [332] | 4-6,2-6 | |
| Challenger - Praga | 08/25 10:00 | 26 | [332] Matheus P De Almeida v Igor Sijsling [338] | Retired | |
| Challenger - Praga | 08/23 13:40 | 25 | [334] Filip C Jianu v Matheus P De Almeida [332] | 6-7,2-6 | |
| Challenger - Verona | 08/18 13:00 | 26 | [162] Holger Vitus Nodskov Rune v Matheus P De Almeida [343] | 6-2,6-3 |