Stadium: Court 10 Round: 25 Ground: Clay
| ITF Estonia F2 | 2018/10/28 09:00 | Oreskovic, Z. v Tverijonas, Aleksas | 6-4,5-7,1-6 |
| ITF Italy F21 Qual | 2018/07/28 14:45 | Oreskovic, Z. v Bernard, Manuel | 3-6,6-2,7-6 |
| ITF Austria F1 | 2018/06/30 11:00 | Staeheli, Luca v Oreskovic, Z. | 6-0,6-1 |
| ITF Bosnia and Herzegovina F3 Qual | 2018/05/28 12:55 | Fellin, Manfred v Oreskovic, Z. | 6-2,3-6,5-7 |
| ITF Bosnia and Herzegovina F3 Qual | 2018/05/27 08:00 | Oreskovic, Z. v Vukovic, Milos | 6-4,6-0 |
| ITF Bosnia and Herzegovina F3 Qual | 2018/05/26 07:00 | Oreskovic, Z. v Dragovic, Stefan | 6-4,7-5 |
| ITF Bulgaria F1 | 2018/05/17 10:45 | Oreskovic, Z. v Manda, Calin | 1-6,1-6 |
| ITF Bulgaria F1 | 2018/05/16 08:52 | Sabanin, Yan v Oreskovic, Z. | 1-1 |
| ITF - M15 Porec | 2019/03/12 09:00 | Schmitz, Constantin v Bessire, Francesco | 6-1,6-1 |
| ITF - M15 Porec | 2019/03/11 11:35 | Schmitz, Constantin v Bangratz, Johannes | 6-2,6-1 |
| ITF M15 Faro | 2019/02/27 10:00 | Lopez San Martin, Alvaro v Schmitz, Constantin | 6-4,6-0 |
| ITF M15 Faro | 2019/02/26 10:00 | Schmitz, Constantin v Gray, Jonathan | 6-2,6-2 |
| ITF M15 Faro | 2019/02/25 12:15 | Schmitz, Constantin v Giacalone, Omar | 6-1,6-3 |
| ITF M15 Vale Do Lobo | 2019/02/18 15:30 | Schmitz, Constantin v Tashi, Vullnet | 4-6,6-4,11-13 |
| ITF M15 Kaarst | 2019/02/08 16:05 | Stanek, Robin v Schmitz, Constantin | 6-0,6-4 |
| ITF M15 Kaarst | 2019/02/07 13:00 | Petr Nouza v Schmitz, Constantin | 4-6,6-1,3-6 |