Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| ITF Germany F13 | 2016/10/06 11:50 | Lukas Ollert v David Poljak | 6-7,3-6 |
| ITF Finland F3 | 2018/08/14 09:35 | Lukas Ollert v Leevi Saatela | 6-3,6-1 |
| ITF Finland F2 | 2018/08/09 09:30 | Lukas Ollert v Michal Konecny | 2-6,4-6 |
| ITF Finland F2 | 2018/08/08 08:00 | Lukas Ollert v Sam Taylor | 6-1,7-6 |
| ITF Finland F2 | 2018/08/06 09:10 | Lukas Ollert v Verneri Tuomi | 6-1,6-2 |
| ITF Austria F2 | 2018/07/12 11:15 | Peter Heller v Lukas Ollert | 6-3,6-2 |
| ITF Austria F2 | 2018/07/11 14:40 | Georg Winkler v Lukas Ollert | 1-6,2-6 |
| ITF Austria F1 | 2018/07/04 11:10 | Matthias Haim v Lukas Ollert | 6-4,6-3 |
| ITF Austria F1 | 2018/07/02 11:10 | Lukas Ollert v Martins Rocens | 6-1,6-1 |
| Challenger Zhangjiagang | 2018/09/02 06:50 | Di Wu v David Poljak | 6-3,6-4 |
| ITF Belarus F3 | 2018/08/24 07:00 | Francesco Vilardo v David Poljak | 6-4,3-6,6-2 |
| ITF Belarus F3 | 2018/08/23 07:00 | Giorgio Ricca v David Poljak | 2-6,4-6 |
| ITF Belarus F3 | 2018/08/22 09:35 | George Tsivadze v David Poljak | 3-6,3-6 |
| ITF Belarus F3 | 2018/08/21 07:00 | Dzianis Zharyn v David Poljak | 1-6,1-6 |
| ITF Belarus F2 | 2018/08/19 07:00 | David Poljak v Sergey Betov | 5-7,6-1,0-6 |
| ITF Belarus F2 | 2018/08/17 07:00 | Ivan Liutarevich v David Poljak | 6-7,6-4,4-6 |
| ITF Belarus F2 | 2018/08/16 07:00 | David Poljak v Aliaksandr Bulitski | 6-4,6-3 |