1st(1st leg) Elche CF - Villarreal CF B 2:0 (1:0)
2nd (2nd leg) Villarreal CF B - Elche CF 2:1 (1:1)
1st(1st leg): 16/06/2018 17:30 2nd (2nd leg): 23/06/2018 17:30 Winner: Elche CF
1st(1st leg) Extremadura UD - FC Cartagena 1:0 (1:0)
2nd (2nd leg) FC Cartagena - Extremadura UD 0:0 (0:0)
1st(1st leg): 17/06/2018 17:30 2nd (2nd leg): 24/06/2018 17:30 Winner: Extremadura UD