| ITF Germany F11 | 2018/08/05 10:00 | Adriano Quinti v Osni Junior | 3-6,0-6 |
| ITF Germany F10 | 2018/08/02 13:10 | Manuel Guinard v Osni Junior | 6-3,6-0 |
| ITF Germany F10 | 2018/08/01 11:45 | Osni Junior v Mike Loccisano | 6-4,5-7,6-4 |
| ITF Germany F10 Qual | 2018/07/30 12:00 | Nico Mertens v Osni Junior | 4-6,5-7 |
| ITF Germany F10 Qual | 2018/07/29 15:30 | Osni Junior v Leon Hoeveler | 6-2,7-6 |
| ITF Germany F10 Qual | 2018/07/29 08:00 | Osni Junior v Benedict Moerl | 6-2,4-6,6-2 |
| 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 |
| ITF Spain F15 Qual | 2018/06/09 11:30 | Kento Yamada v Marc Guardeno | 6-4,6-1 |
| ITF Italy F2 Qual | 2018/03/03 13:30 | Matteo Curci v Marc Guardeno | 6-7,6-3,6-2 |
| ITF Spain F8 | 2017/03/17 12:00 | Marc Guardeno v Marco Di Prima | 0-6,0-6 |
| ITF Spain F12 Qual | 2016/04/29 07:00 | Marc Guardeno v Quim Sorni Chavarria | 0-6,0-6 |