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 Victor Pilla Helal Lopes De Oliveira | 6-0,7-6 |
| ITF Brazil F7 | 2018/10/27 12:00 | Matheus P De Almeida v Karl W W 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 Franco Capalbo | 6-4,6-3 |
| ITF Bolivia F2 | 2018/09/18 23:30 | Matheus P De Almeida v Agustin E C Lorberg | 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 | Alexandre Tsuchiya v Christian Lindell | 4-6,5-7 |
| ITF Brazil F5 | 2018/10/15 16:30 | Alexandre Tsuchiya v Francisco Comesana | 6-7,2-6 |
| ITF Bolivia F2 | 2018/09/19 20:00 | Jose Pereira v Alexandre Tsuchiya | 6-2,7-6 |
| ITF Bolivia F2 | 2018/09/18 19:00 | Miguel Fernando Pereira v Alexandre Tsuchiya | 5-7,6-3,2-6 |
| ITF Bolivia F1 | 2018/09/11 19:30 | Alexandre Tsuchiya v Jose Olivares | 6-7,3-6 |
| ITF Portugal F16 | 2018/08/21 08:30 | Antoine Cornut-Chauvinc v Alexandre Tsuchiya | 6-4,6-4 |
| ITF Portugal F15 | 2018/08/14 09:00 | Sora Fukuda v Alexandre Tsuchiya | 6-3,6-4 |
| ITF Portugal F14 | 2018/08/08 11:20 | Baptiste Crepatte v Alexandre Tsuchiya | 2-6,6-1,6-4 |