| Chrobry Głogów beat Chojniczanka Chojnice 2-0 (H) on 26 Aug 2018 |
| Chojniczanka Chojnice beat Raków Częstochowa 2-1 (H) on 3 Aug 2018 |
| Raków Częstochowa beat GKS Katowice 2-0 (H) on 22 Aug 2018 |
| GKS Katowice beat Wigry Suwałki 2-0 (H) on 18 Aug 2018 |
| Wigry Suwałki beat GKS Jastrzębie 2-1 (A) on 21 Jul 2018 |
| GKS Jastrzębie beat Odra Opole 2-1 (A) on 17 Aug 2018 |
| Odra Opole beat Sandecja Nowy Sącz 1-0 (H) on 28 Jul 2018 |
| Sandecja Nowy Sącz beat OKS Stomil Olsztyn 1-0 (H) on 22 Aug 2018 |
| OKS Stomil Olsztyn beat GKS Tychy 3-0 (A) on 17 Aug 2018 |
| GKS Tychy beat Bruk Bet Termalica Nieciecza 2-1 (H) on 11 Aug 2018 |
| Bruk Bet Termalica Nieciecza beat Podbeskidzie Bielsko Biała 2-1 (A) on 28 Jul 2018 |
| Podbeskidzie Bielsko Biała beat Warta Poznań 4-1 (H) on 22 Aug 2018 |
| Warta Poznań beat Puszcza Niepołomice 1-0 (A) on 11 Aug 2018 |
| Puszcza Niepołomice beat Stal Mielec 1-0 (H) on 29 Jul 2018 |
| Stal Mielec beat Bytovia Bytów 2-1 (A) on 11 Aug 2018 |
| Bytovia Bytów beat Garbarnia Krakow 3-0 (A) on 5 Aug 2018 |
| Garbarnia Krakow beat ŁKS Łódź 3-2 (H) on 18 Aug 2018 |
| ŁKS Łódź beat Chrobry Głogów 1-0 (A) on 20 Jul 2018 |
HWC: Thick arrows show the earliest chain of wins that passes through every team and returns to its start.