| ITF Italy F16 | 2015/07/01 08:30 | Celebic, Ljubomir v Lipovsek Puches, Tomas | 3-6,6-7 |
| ITF Italy F16 | 2015/06/29 12:15 | Celebic, Ljubomir v Picco, Francesco | 6-7,6-4,6-4 |
| ITF Italy F7 | 2015/04/30 11:00 | Celebic, Ljubomir v Leonardi, Filippo | 6-4,2-6,3-6 |
| ITF Italy F7 | 2015/04/29 09:40 | Antonescu, Vasile v Celebic, Ljubomir | 6-7,2-6 |
| ITF Italy F7 | 2015/04/27 12:20 | Celebic, Ljubomir v Tallon Griekspoor | 4-6,6-1,6-2 |
| ITF Italy F6 | 2015/04/20 07:30 | Celebic, Ljubomir v Galovic, Viktor | 6-3,4-6,0-6 |
| ITF Croatia F4 Qual | 2015/03/09 13:00 | Celebic, Ljubomir v Radinski, Aljaz | 6-4,4-6,2-6 |
| ITF Croatia F4 Qual | 2015/03/09 09:00 | Celebic, Ljubomir v Andrea Guerrieri | 6-1,6-2 |
| Coupe Davis | 2015/07/15 10:10 | Zopp, Jurgen v Leuch, Vital Flurin | 6-2,6-2 |