Stadium: Court 17 Round: 62 Ground: Clay
| Challenger Rio De Janeiro Qual | 2017/11/18 14:15 | Fernando Romboli v Osni Junior | 4-6,7-5,6-3 |
| Challenger Campinas Qual | 2016/10/01 14:20 | Alex Blumenberg v Osni Junior | 6-1,6-2 |
| Challenger Santos | 2016/09/21 14:00 | Osni Junior v Thiago Monteiro | 2-6,6-7 |
| ITF Brazil F4 Qual | 2016/07/17 14:30 | Felipe Meligeni Rodrigues Alves v Osni Junior | 7-5,6-3 |
| ITF Brazil F4 Qual | 2016/07/17 12:00 | Osni Junior v Gabriel P Tumasonis | 6-3,6-2 |
| ITF Brazil F4 Qual | 2016/07/16 12:00 | Osni Junior v Gabriel Ciro Da Silva | 7-6,6-3 |
| ITF Brazil F9 | 2014/10/13 15:50 | Osni Junior v Carlos E. Severino | 3-6,2-6 |
| Challenger Campinas Qual | 2014/09/15 13:30 | Caio Zampieri v Osni Junior | 6-2,6-2 |
| ITF USA F40 | 2017/12/06 16:00 | Lucas Poullain v Aron Hiltzik | 6-0,3-6,1-6 |
| ITF USA F37 | 2017/11/12 17:00 | Nicaise Muamba v Lucas Poullain | 7-6,7-6 |
| ITF USA F37 | 2017/11/11 19:00 | Ryan Goetz v Lucas Poullain | 6-7,3-6 |
| ITF Morocco F3 | 2017/08/01 10:00 | Nicolo Turchetti v Lucas Poullain | 2-6,6-1,6-4 |
| ITF Morocco F3 | 2017/07/30 09:30 | Amaury Delmas v Lucas Poullain | 2-6,1-6 |
| ITF Morocco F2 | 2017/07/26 09:30 | Lucas Poullain v Carlos Boluda-Purkiss | 0-6,3-6 |
| ITF Morocco F2 | 2017/07/25 12:00 | Gregorio Cordonnier v Lucas Poullain | 3-6,7-5,2-6 |
| ITF Morocco F2 | 2017/07/23 10:00 | Lucas Poullain v Francesco Bessire | 6-3,7-6 |