| Challenger Perugia Qual | 07/09 15:05 | 46 | [333] Tomislav Brkic v Ljubomir Celebic [451] | 6-3,7-6 | |
| Challenger Perugia Qual | 07/09 09:30 | 45 | [451] Ljubomir Celebic v Nino Serdarusic [231] | 7-6,1-6,6-1 | |
| ITF Italy F20 | 07/07 14:00 | 28 | [279] Andrea Collarini v Ljubomir Celebic [451] | 6-3,6-2 | |
| ITF Italy F20 | 07/06 14:00 | 27 | Ljubomir Celebic v Ugo Humbert | 7-6,6-3 | |
| ITF Italy F20 | 07/05 14:10 | 26 | Ljubomir Celebic v Gian Marco Moroni | 6-4,7-5 | |
| ITF Italy F20 | 07/03 11:25 | 25 | Ljubomir Celebic v Luca Prevosto | 6-4,6-3 | |
| ITF Italy F17 | 06/13 12:20 | 25 | Roberto Marcora v Ljubomir Celebic | 6-2,6-2 | |
| ITF Bosnia and Herzegovina F2 | 05/31 08:00 | 25 | Tomislav Jotovski v Ljubomir Celebic | Retired | |
| ITF Bosnia and Herzegovina F1 | 05/26 08:00 | 27 | Ljubomir Celebic v Tomislav Jotovski | 2-6,2-6 | |
| ITF Bosnia and Herzegovina F1 | 05/25 08:00 | 26 | Ljubomir Celebic v Ioannis Stergiou | 6-4,7-6 | |
| ITF Bosnia and Herzegovina F1 | 05/24 09:50 | 25 | Ljubomir Celebic v Aron Pierce | 6-3,6-3 | |
| ITF Hungary F2 | 05/17 08:00 | 26 | Nicola Kuhn v Ljubomir Celebic | 6-4,6-3 | |
| ITF Hungary F2 | 05/16 11:50 | 25 | Ciprian Alexandru Porumb v Ljubomir Celebic | 2-6,3-6 | |
| ITF Hungary F1 | 05/12 12:20 | 27 | Ljubomir Celebic v Alex Molcan | 2-6,2-6 | |
| ITF Hungary F1 | 05/11 08:00 | 26 | Ljubomir Celebic v Robin Kern | 6-4,6-4 | |
| ITF Hungary F1 | 05/09 08:00 | 25 | Ljubomir Celebic v Miki Jankovic | 6-4,6-1 | |
| ITF Tunisia F16 | 04/28 09:00 | 27 | [449] Antoine Hoang v Ljubomir Celebic [454] | 6-4,6-1 | |
| ITF Tunisia F16 | 04/27 09:00 | 26 | Fernando Yamacita v Ljubomir Celebic | 2-6,3-6 | |
| ITF Tunisia F16 | 04/26 11:00 | 25 | Antonio Massara v Ljubomir Celebic | 2-6,3-6 | |
| ITF Tunisia F15 | 04/21 08:30 | 27 | Kirill Dmitriev v Ljubomir Celebic | 7-5,7-6 | |
| ITF Tunisia F15 | 04/20 11:00 | 26 | Davide Galoppini v Ljubomir Celebic | 2-6,5-7 | |
| ITF Tunisia F15 | 04/19 08:30 | 25 | [457] Ljubomir Celebic v Christopher Heyman [380] | 2-6,6-4,6-1 | |
| ITF Tunisia F14 | 04/13 08:30 | 26 | Ljubomir Celebic v Jonathan Kanar | 6-7,6-2,5-7 | |
| ITF Tunisia F14 | 04/12 10:40 | 25 | Ljubomir Celebic v Francesco Vilardo | 6-2,6-2 | |
| Davis Cup | 04/07 13:15 | 2 | [206] James McGee v Ljubomir Celebic [458] | 5-7,6-2,3-6 | |
| Davis Cup | 04/07 07:40 | - | Ljubomir Celebic v Laurent Recouderc | 7-6,6-4 | |
| Davis Cup | 04/06 10:05 | - | Ljubomir Celebic v Hyda Banjska | 6-1,6-1 | |
| ITF Croatia F4 | 03/31 10:35 | 27 | Michael Linzer v Ljubomir Celebic | 7-6,4-6,6-4 | |
| ITF Croatia F4 | 03/30 13:35 | 26 | Davide Galoppini v Ljubomir Celebic | 6-2,4-6,3-6 | |
| ITF Croatia F4 | 03/29 09:00 | 25 | Andres Gabriel Ciurletti v Ljubomir Celebic | 2-6,2-6 |