Round: 25 Ground: Clay
| 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 |
| Coupe Davis | 2015/07/17 10:30 | Zopp, Jurgen v Celebic, Ljubomir | 6-3,6-4 |
| ITF Slovakia F3 | 2015/07/31 08:00 | Ignatik, Uladzimir v Colella, Alessandro | 6-0,6-0 |
| ITF Slovakia F3 | 2015/07/30 09:30 | Colella, Alessandro v Fabian, Patrik | 6-2,3-6,6-1 |
| ITF Slovakia F3 | 2015/07/28 12:00 | Colella, Alessandro v Shcherba, Vitalii | 3-6,6-1,6-0 |
| ITF Slovakia F2 | 2015/07/21 10:00 | Lomacki, Piotr v Colella, Alessandro | 4-6,6-4,6-0 |
| ITF Italy F18 | 2015/07/17 15:05 | Bahamonde, Francisco v Colella, Alessandro | 6-2,6-0 |
| ITF Italy F18 | 2015/07/15 14:55 | Colella, Alessandro v Veger, Filip | 5-7,6-3,6-4 |
| ITF Italy F30 | 2015/05/09 08:00 | Colella, Alessandro v Chiurulli, Daniele | 6-0,6-2 |
| ITF Italy F30 | 2015/05/08 08:00 | Colella, Alessandro v Heras, Patricio | 0-6,1-6 |