Stadium: Quadra Central Round: 25 Ground: Clay
| ITF Brazil F7 | 2018/10/29 12:00 | Matheus P De Almeida v Gustavo Heide | 6-4,6-3 |
| ITF Brazil F7 | 2018/10/28 15:00 | Matheus P De Almeida v Pilla Helal Lopes de Oliveira, Victor | 6-0,7-6 |
| ITF Brazil F7 | 2018/10/27 12:00 | Matheus P De Almeida v Karl William Wurth Mac-Leay | 6-2,6-1 |
| Challenger Campinas | 2018/10/01 16:35 | Matheus P De Almeida v Andrea Collarini | 1-6,6-7 |
| ITF Bolivia F2 | 2018/09/20 20:30 | Matias Franco Descotte v Matheus P De Almeida | 6-3,6-2 |
| ITF Bolivia F2 | 2018/09/19 20:00 | Matheus P De Almeida v Capalbo, Franco | 6-4,6-3 |
| ITF Bolivia F2 | 2018/09/18 23:30 | Matheus P De Almeida v Cuellar Lorberg, Agustin Eduardo | 6-2,6-2 |
| ITF Bolivia F2 | 2018/09/17 18:00 | Matheus P De Almeida v Lautaro Agustin Falabella | 6-2,6-0 |
| ITF Brazil F6 | 2018/10/23 18:45 | Tsuchiya, Alexandre v Lindell, Christian | 4-6,5-7 |
| ITF Brazil F5 | 2018/10/15 16:30 | Tsuchiya, Alexandre v Francisco Comesana | 6-7,2-6 |
| ITF Bolivia F2 | 2018/09/19 20:00 | Jose Pereira v Tsuchiya, Alexandre | 6-2,7-6 |
| ITF Bolivia F2 | 2018/09/18 19:00 | Pereira, Miguel Fernando v Tsuchiya, Alexandre | 5-7,6-3,2-6 |
| ITF Bolivia F1 | 2018/09/11 19:30 | Tsuchiya, Alexandre v Olivares, Jose | 6-7,3-6 |
| ITF Portugal F16 | 2018/08/21 08:30 | Cornut-Chauvinc, Antoine v Tsuchiya, Alexandre | 6-4,6-4 |
| ITF Portugal F15 | 2018/08/14 09:00 | Sora Fukuda v Tsuchiya, Alexandre | 6-3,6-4 |
| ITF Portugal F14 | 2018/08/08 11:20 | Crepatte, Baptiste v Tsuchiya, Alexandre | 2-6,6-1,6-4 |