| Preliminary Round | 1st Qualifying Round | 2nd Qualifying Round | 3rd Qualifying Round | Playoffs | Group Stage |
| 16th Finals | 8th Finals | Quarterfinals | Semifinals | Final |
Round:
Played
1st Round
09/19/2019 - Thursday
12:55
CFR Cluj
2
x
1
Lazio
12:55
Rennes
1
x
1
Celtic
2nd Round
10/03/2019 - Thursday
15:00
Celtic
2
x
0
CFR Cluj
15:00
Lazio
2
x
1
Rennes
3rd Round
10/24/2019 - Thursday
15:00
Celtic
2
x
1
Lazio
15:00
Rennes
0
x
1
CFR Cluj
4th Round
11/07/2019 - Thursday
12:55
CFR Cluj
1
x
0
Rennes
12:55
Lazio
1
x
2
Celtic
5th Round
11/28/2019 - Thursday
15:00
Celtic
3
x
1
Rennes
15:00
Lazio
1
x
0
CFR Cluj
6th Round
12/12/2019 - Thursday
12:55
CFR Cluj
2
x
0
Celtic
12:55
Rennes
2
x
0
Lazio