Stadium: Opatija 3 Round: 28 Ground: Clay
| ITF Croatia F3 MD | 2018/03/22 14:10 | Celebic L / Nagy P v Grahovac D / Kajin K | 6-1,6-2 |
| ITF Croatia F3 MD | 2018/03/20 14:25 | Sabanov/Sabanov v Celebic L / Nagy P | 6-7,2-6 |
| ITF Tunisia F2 MD | 2018/01/19 13:20 | Celebic L / Nagy P v Carli C / Turchetti N | 2-6,6-7 |
| ITF Tunisia F2 MD | 2018/01/18 12:55 | Bortolotti M / Ocleppo J v Celebic L / Nagy P | 5-7,6-4,9-11 |
| ITF Tunisia F2 MD | 2018/01/16 13:15 | Celebic L / Nagy P v Dorozhkin S / Munafo P | 6-4,6-2 |
| ITF Tunisia F1 MD | 2018/01/10 13:35 | Celebic L / Nagy P v Gutierrez-Ferrol S / Perez Contri S | 4-6,5-7 |
| ITF Croatia F3 MD | 2018/03/20 13:00 | Antonescu V / Dima D v Kowalczyk M / Kozielski L | 6-7,6-7 |
| Allemagne F2, Doubles | 2018/01/23 13:30 | Kowalczyk M / Kozielski L v Hassan B / Schell N | 2-6,6-4,6-10 |
| ITF Egypt F38 MD | 2017/12/15 08:00 | Kowalczyk M / Kozielski L v Goveas A / Kadhe A | 4-6,3-6 |
| ITF Egypt F37 MD | 2017/12/05 13:45 | Fellin M / Weis A v Kowalczyk M / Kozielski L | 2-6,6-3,10-7 |
| ITF Poland F8 MD | 2017/08/01 17:00 | Dembek M / Smola M v Kowalczyk M / Kozielski L | 6-2,6-2 |