Stadium: Court 5 Round: 44 Ground: Clay
| ITF M15 Ibague | 2021/09/06 18:30 | Martinez, Esdras v Gustavo Tedesco | 4-6,2-6 |
| ITF M15 Ibague | 2021/09/06 18:30 | Marin Dumitru v Gruber, Caio | 4-6,1-6 |
| Maldonado, Singles Qualifying M-ITF-URU-01A | 2019/11/25 14:30 | Arus, Rodrigo v Gruber, Caio | 6-4,6-3 |
| Santa Tecla, Singles M-ITF-ESA-01A | 2019/10/01 15:00 | Gruber, Caio v Blumenberg, Alex | 2-6,2-6 |
| ITF Brazil F7 | 2018/10/28 15:00 | Gruber, Caio v Rodrigues, Natan | 2-6,2-6 |
| ITF Brazil F6 | 2018/10/20 13:00 | Gruber, Caio v Trevisan Rezende, Matheus | 6-1,3-6,0-6 |
| ITF Brazil F5 | 2018/10/14 13:00 | Hinsching, Joao v Gruber, Caio | 6-1,6-1 |
| ITF Brazil F5 | 2018/10/13 13:00 | Gruber, Caio v Ortega, Pedro | 6-7,7-5,6-2 |