| ITF Croatia F3 | 2018/03/23 10:00 | Nino Serdarusic v Ljubomir Celebic | 4-6,6-3,6-2 |
| ITF Croatia F3 | 2018/03/22 09:00 | Mike Urbanija v Ljubomir Celebic | 6-0,3-6,2-6 |
| ITF Croatia F3 | 2018/03/21 13:45 | Ljubomir Celebic v Tomas Lipovsek Puches | 1-6,6-3,6-3 |
| ITF Greece F3 | 2018/03/13 08:00 | Riccardo Balzerani v Ljubomir Celebic | 6-4,6-1 |
| ITF Greece F2 | 2018/03/06 08:00 | Ljubomir Celebic v Giovanni Fonio | 6-3,3-6,4-6 |
| ITF Greece F1 | 2018/03/03 09:40 | Ljubomir Celebic v Yannick Jankovits | 4-6,6-7 |
| ITF Greece F1 | 2018/03/02 10:00 | Luke Johnson v Ljubomir Celebic | 4-6,6-7 |
| ITF Greece F1 | 2018/03/01 08:00 | Ljubomir Celebic v Adrian Bodmer | 6-2,6-0 |
| Davis Cup | 2017/04/08 08:00 | Sedrak Khachatryan v Laurent Recouderc | 2-6,0-6 |
| Davis Cup | 2016/03/05 15:30 | Sedrak Khachatryan v Laurent Recouderc | 2-6,3-6 |
| Davis Cup | 2015/07/16 10:15 | Viktor Durasovic v Sedrak Khachatryan | 6-2,6-3 |