| Lleida Esportiu beat Villarreal B 2-1 (H) on 26 Aug 2018 |
| Villarreal B beat UB Conquense 3-2 (H) on 13 Oct 2018 |
| UB Conquense beat Sabadell 2-0 (H) on 1 Sep 2018 |
| Sabadell beat RCD Espanyol B 3-2 (H) on 7 Oct 2018 |
| RCD Espanyol B beat Ejea 2-0 (H) on 30 Sep 2018 |
| Ejea beat Atlético Baleares 2-1 (H) on 9 Sep 2018 |
| Atlético Baleares beat Olot 1-0 (H) on 14 Oct 2018 |
| Olot beat Badalona 4-0 (H) on 7 Oct 2018 |
| Badalona beat Valencia B 4-2 (A) on 29 Sep 2018 |
| Valencia B beat Ebro 2-0 (H) on 25 Aug 2018 |
| Ebro beat Peralada 2-1 (A) on 21 Oct 2018 |
| Peralada beat Teruel 1-0 (A) on 27 Oct 2018 |
| Teruel beat Hércules 2-0 (A) on 23 Sep 2018 |
| Hércules beat Cornellà 2-0 (A) on 30 Sep 2018 |
| Cornellà beat Levante UD B 1-0 (H) on 1 Sep 2018 |
| Levante UD B beat Alcoyano 3-2 (A) on 21 Oct 2018 |
| Alcoyano beat Barcelona B 3-1 (H) on 26 Aug 2018 |
| Barcelona B beat Ontinyent 3-0 (A) on 13 Oct 2018 |
| Ontinyent beat Castellón 2-1 (H) on 1 Sep 2018 |
FLP: Thick arrows show the earliest chain of wins that passes through every team.