Round: 44 Ground: Clay
| ITF Croatia F2 | 2018/03/12 11:00 | Ivan Sabanov v Albert Sprlak Puk | 6-1,3-6,6-3 |
| ITF Croatia F2 | 2018/03/12 08:00 | Pavle Drobnjakovic v Albert Sprlak Puk | 2-6,2-6 |
| ITF Croatia F2 | 2018/03/10 10:00 | Ivan Randjelovic v Albert Sprlak Puk | 0-6,0-6 |
| ITF Germany F1 | 2018/01/07 08:00 | Albert Sprlak Puk v Stefan Seifert | 2-6,3-6 |
| ITF Czech Republic F11 Qual | 2017/11/19 15:00 | Albert Sprlak Puk v Andres Gabriel Ciurletti | 3-6,4-6 |
| ITF Czech Republic F10 | 2017/11/13 09:00 | Maxime Pauwels v Albert Sprlak Puk | 6-3,6-4 |
| Challenger Bratislava Qual | 2017/11/04 09:00 | David Damian Brna v Albert Sprlak Puk | 6-3,6-4 |
| ITF Czech Republic F8 Qual | 2017/10/30 09:00 | Albert Sprlak Puk v Yvo Panak | 4-6,5-7 |
| ITF Hungary F1 | 2018/05/08 10:45 | Franjo Raspudic v Constantin Christ | 6-2,6-1 |
| ITF Hungary F1 Qual | 2018/05/07 08:00 | Marcell Bartakovics v Constantin Christ | 2-6,6-4,1-6 |
| ITF Hungary F1 Qual | 2018/05/06 08:00 | Davud Amirov v Constantin Christ | 5-7,0-6 |
| ITF Poland F1 | 2018/04/28 07:00 | Constantin Christ v Moritz Dettinger | 0-6,2-6 |
| ITF Italy F5 Qual | 2018/03/27 13:00 | Maciej Smola v Constantin Christ | 6-1,6-1 |
| ITF Italy F5 Qual | 2018/03/27 09:00 | Constantin Christ v Daniel Michalski | 0-6,6-4,6-4 |
| ITF Italy F5 Qual | 2018/03/24 10:30 | Alessandro Ricci v Constantin Christ | 6-7,2-6 |
| ITF Croatia F3 | 2018/03/20 09:00 | Mike Urbanija v Constantin Christ | 6-0,6-2 |