Stadium: Court 5 Round: 44 Ground: Clay
| ITF Poland F6 Qual | 2018/08/04 11:00 | Pointon, Samuel v Steinberger, Max | 1-6,0-6 |
| ITF Slovakia F1 | 2018/07/22 11:00 | Steinberger, Max v Jirousek, Tomas | 2-6,1-6 |
| ITF Germany F8 Qual | 2018/07/15 08:30 | Vilaro, Alejo v Steinberger, Max | 6-2,6-1 |
| Czech Republic F6, Singles Qualifying | 2018/07/07 07:30 | Steinberger, Max v Mammetgulyyev, Isa | 4-6,4-6 |
| ITF Poland F2 | 2018/05/07 08:00 | Steinberger, Max v Recek, Dominik | 2-6,3-6 |
| ITF Poland F2 | 2018/05/06 08:00 | Nazaruk, Dominik v Steinberger, Max | 4-6,7-5,5-7 |
| ITF Poland F2 | 2018/05/05 12:30 | Steinberger, Max v Mlazga, Adam | 6-4,5-7,6-3 |
| ITF Poland F4 Qual | 2015/08/30 07:30 | Krawczynski, Karol v Steinberger, Max | 7-5,6-1 |
| ITF Poland F6 Qual | 2018/08/05 12:30 | Zielinski, Jan v Tadyszak, Norbert | 6-0,6-0 |
| ITF Poland F6 Qual | 2018/08/04 08:00 | Juliusz Bienkiewicz v Zielinski, Jan | 3-6,3-6 |
| Challenger Sopot Qual | 2018/07/30 15:15 | Dimitar Kuzmanov v Zielinski, Jan | 6-0,6-1 |
| Challenger Sopot Qual | 2018/07/30 09:00 | Zielinski, Jan v Rodriguez, Cristian | 7-5,6-3 |
| Challenger Sopot Qual | 2018/07/28 12:05 | Wojcik, Yann v Zielinski, Jan | 2-6,6-2,3-6 |
| ITF Poland F3 Qual | 2017/06/25 08:00 | Gennaro, Dante v Zielinski, Jan | 6-3,6-1 |
| ITF Poland F2 | 2017/06/17 08:00 | Bergevi, Filip v Zielinski, Jan | 4-6,7-6,6-3 |
| ITF Poland F1 | 2017/06/12 13:45 | Zielinski, Jan v Zdenek Kolar | 4-6,3-6 |