Stadium: Indoor Round: 54 Ground: Clay
| ITF M15 Maldonado | 2019/11/25 14:30 | Rodrigo Arus v Caio Gruber | 6-4,6-3 |
| ITF M15 Santa Tecla | 2019/10/01 15:00 | Caio Gruber v Alex Blumenberg | 2-6,2-6 |
| ITF Brazil F7 | 2018/10/28 15:00 | Caio Gruber v Natan Rodrigues | 2-6,2-6 |
| ITF Brazil F6 | 2018/10/20 13:00 | Caio Gruber v Matheus T Rezende | 6-1,3-6,0-6 |
| ITF Brazil F5 | 2018/10/14 13:00 | Joao Hinsching v Caio Gruber | 6-1,6-1 |
| ITF Brazil F5 | 2018/10/13 13:00 | Caio Gruber v Pedro Ortega | 6-7,7-5,6-2 |