Round: 26 Ground: Clay
| ITF Italy F7 | 2015/04/30 11:00 | Celebic, Ljubomir v Leonardi, Filippo | 6-4,2-6,3-6 |
| ITF Romania F13 | 2015/08/20 09:30 | Leonardi, Filippo v Fleming, David | 6-2,6-3 |
| ITF Romania F12 | 2015/08/12 07:00 | Marcora, Roberto v Leonardi, Filippo | 6-3,6-0 |
| ITF Romania F12 | 2015/08/11 09:00 | Leonardi, Filippo v Baskov, Dmitrii | 6-0,6-2 |
| ITF Italy F21 | 2015/08/04 15:00 | Banes, Maverick v Leonardi, Filippo | 4-6,6-3,6-4 |
| Umag, Croatie, Qualifications | 2015/07/19 10:50 | Facundo Bagnis v Leonardi, Filippo | 6-3,6-3 |
| Umag, Croatie, Qualifications | 2015/07/18 10:00 | Leonardi, Filippo v Gonzalez, Santiago | 6-2,6-4 |
| ITF Italy F17 | 2015/07/07 19:00 | Licciardi, Pietro v Leonardi, Filippo | 7-5,6-2 |
| ITF Italy F15 | 2015/06/20 10:05 | Leonardi, Filippo v Brunetti, Lorenzo | 6-3,7-6 |
| ITF Romania F13 | 2015/08/18 06:30 | Celebic, Ljubomir v Colella, Alessandro | 7-6,6-1 |
| ITF Germany F10 | 2015/08/07 10:00 | Hugo Dellien v Celebic, Ljubomir | 6-1,7-5 |
| ITF Germany F10 | 2015/08/06 11:00 | Celebic, Ljubomir v Wunner, Matthias | 6-2,7-5 |
| ITF Germany F10 | 2015/08/05 11:30 | Sikora, Adrian v Celebic, Ljubomir | 4-6,6-2,4-6 |
| ITF Germany F10 | 2015/08/04 09:00 | Fallert, Fabian v Celebic, Ljubomir | 3-6,2-6 |
| ITF Serbia F7 | 2015/07/29 09:40 | Celebic, Ljubomir v Hugo Grenier | 4-6,1-6 |
| ITF Serbia F6 | 2015/07/23 15:00 | Celebic, Ljubomir v Jankovic, Miki | 3-6,4-6 |
| ITF Serbia F6 | 2015/07/22 15:00 | Celebic, Ljubomir v Conkic, Petar | 6-3,6-1 |