Stadium: Court 1 Round: 25 Ground: Clay
| ITF Austria F2 | 2016/07/11 10:30 | Leonardi, Filippo v Nik Razborsek | 0-6,4-6 |
| ITF Italy F13 | 2018/06/06 15:55 | Manuel Guinard v Leonardi, Filippo | 6-4,6-3 |
| ITF Italy F13 | 2018/06/05 09:30 | Leonardi, Filippo v Andrea Guerrieri | 6-0,6-3 |
| Italie F10, Qualifications Simples | 2018/05/16 11:30 | Balzerani, Riccardo v Leonardi, Filippo | 6-1,7-6 |
| Italie F10, Qualifications Simples | 2018/05/15 14:55 | Pasquale De Giorgio v Leonardi, Filippo | 4-6,0-6 |
| ITF Italy F4 | 2018/03/21 14:00 | Leonardi, Filippo v Hugo Dellien | 3-6,0-6 |
| Italie F3, Simples | 2018/03/15 13:00 | Leonardi, Filippo v Cuevas, Martin | 4-6,6-3,1-6 |
| Italie F3, Simples | 2018/03/13 14:45 | de Rossi, Marco v Leonardi, Filippo | 3-6,5-7 |
| Tunisia F6, Singles Qualifying | 2018/02/14 09:00 | Leonardi, Filippo v Ghorbel, Anis | 2-6,4-6 |
| ITF Bosnia and Herzegovina F3 | 2018/06/01 13:00 | Elmar Ejupovic v Nik Razborsek | 6-3,6-4 |
| ITF Bosnia and Herzegovina F3 | 2018/05/31 11:00 | Vujic, Marko v Nik Razborsek | 1-6,0-6 |
| ITF Bosnia and Herzegovina F3 | 2018/05/30 09:00 | Johan Nikles v Nik Razborsek | 1-6,5-7 |
| Turkey F16, Singles Qualifying | 2018/04/29 07:30 | Nik Razborsek v Smirnov, Artem | 6-3,6-4 |
| Turkey F16, Singles Qualifying | 2018/04/27 07:30 | Marsel Ilhan v Nik Razborsek | 1-6,3-6 |
| Turkey F16, Singles Qualifying | 2018/04/26 09:15 | Nik Razborsek v Jotovski, Tomislav | 6-3,6-4 |
| Turkey F16, Singles Qualifying | 2018/04/25 07:30 | Nik Razborsek v Erler, Alexander | 3-6,6-3,6-1 |
| Turkey F16, Singles Qualifying | 2018/04/23 07:30 | Nik Razborsek v Frost, Linus | 6-3,6-3 |