Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Medellin | 2021/09/15 18:15 | Nicolas Buitrago v Gruber, Caio | 6-3,6-4 |
| ITF M25 Medellin | 2021/09/13 20:00 | Marcelo Marino Hidalgo v Gruber, Caio | 5-7,2-6 |
| ITF M15 Ibague | 2021/09/07 14:00 | Gustavo Tedesco v Gruber, Caio | 4-6,6-4,10-5 |
| 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 Natan Rodrigues | 2-6,2-6 |
| ITF Brazil F6 | 2018/10/20 13:00 | Gruber, Caio v Trevisan Rezende, Matheus | 6-1,3-6,0-6 |
| Sao Paulo, Singles M-ITF-BRA-06A | 2019/10/15 13:50 | Miele, Andre v Carraro, Luciano | 5-7,7-5,4-10 |
| Sao Paulo, Singles M-ITF-BRA-06A | 2019/10/14 14:00 | Miele, Andre v Gabriel P Tumasonis | 6-0,6-2 |
| ITF M25 Rio de Janeiro | 2019/10/11 14:30 | Camilo Ugo Carabelli v Miele, Andre | 7-5,6-0 |
| ITF M25 Rio de Janeiro | 2019/10/10 19:15 | Miele, Andre v Soares Klier, Gilbert | 4-6,6-4,6-2 |
| ITF M25 Rio de Janeiro | 2019/10/08 15:35 | Miele, Andre v Giannella, Joao | 6-1,6-1 |
| ITF M25 Rio de Janeiro | 2019/10/07 14:00 | Miele, Andre v Erhardt, Gaston | 6-2,6-2 |
| ITF M15 Lambare | 2019/08/23 15:35 | Joao Lucas Reis da Silva v Miele, Andre | 7-5,7-5 |
| ITF M15 Lambare | 2019/08/22 18:20 | Miele, Andre v Erhardt, Gaston | 6-2,7-6 |