| Preliminary Round | 1st Qualifying Round | 2nd Qualifying Round | 3rd Qualifying Round | Playoff Round | Group Stage |
| 16th Finals | 8th Finals | Quarterfinals | Semifinals | Final |
Round:
Played
1st Round
07/12/2018 - Thursday
14:00
Široki Brijeg
2
x
2
Domžale
2nd Round
07/19/2018 - Thursday
15:00
Domžale
1
x
1
Široki Brijeg