Group A
| Rank | Teams | Played | Won | Drawn | Lost | Differential | Goal difference | Points | Current form |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
 İstanbul Başakşehir |
6 | 4 | 1 | 1 | 14 - 3 | 11 | 13 | WLWDL |
| 2 |
 Fiorentina |
6 | 4 | 1 | 1 | 14 - 6 | 8 | 13 | WLLWL |
| 3 |
 Hearts |
6 | 2 | 0 | 4 | 6 - 16 | -10 | 6 | WLLWL |
| 4 |
 RFS |
6 | 0 | 2 | 4 | 2 - 11 | -9 | 2 | LDLLL |
Group B
| Rank | Teams | Played | Won | Drawn | Lost | Differential | Goal difference | Points | Current form |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
 West Ham |
6 | 6 | 0 | 0 | 13 - 4 | 9 | 18 | WWWWW |
| 2 |
 Anderlecht |
6 | 2 | 2 | 2 | 6 - 5 | 1 | 8 | LWDWL |
| 3 |
 Silkeborg |
6 | 2 | 0 | 4 | 12 - 7 | 5 | 6 | LWWLL |
| 4 |
 FCSB |
6 | 0 | 2 | 4 | 3 - 18 | -15 | 2 | DLLDL |
Group C
| Rank | Teams | Played | Won | Drawn | Lost | Differential | Goal difference | Points | Current form |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
 Villarreal |
6 | 4 | 1 | 1 | 14 - 9 | 5 | 13 | WDLDL |
| 2 |
 Lech Poznań |
6 | 2 | 3 | 1 | 12 - 7 | 5 | 9 | DWWWW |
| 3 |
 Hapoel BS |
6 | 1 | 4 | 1 | 8 - 5 | 3 | 7 | LDDDW |
| 4 |
 Austria Wien |
6 | 0 | 2 | 4 | 2 - 15 | -13 | 2 | LLLDL |
Group D
| Rank | Teams | Played | Won | Drawn | Lost | Differential | Goal difference | Points | Current form |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
 Nice |
6 | 2 | 3 | 1 | 8 - 7 | 1 | 9 | DWWDL |
| 2 |
 Partizan |
6 | 2 | 3 | 1 | 9 - 7 | 2 | 9 | WLDWL |
| 3 |
 Köln |
6 | 2 | 2 | 2 | 8 - 8 | 0 | 8 | WLLWD |
| 4 |
 1. FC Slovácko |
6 | 1 | 2 | 3 | 8 - 11 | -3 | 5 | LLWLD |
Group E
| Rank | Teams | Played | Won | Drawn | Lost | Differential | Goal difference | Points | Current form |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
 AZ |
6 | 5 | 0 | 1 | 12 - 6 | 6 | 15 | WWWLL |
| 2 |
 Dnipro-1 |
6 | 3 | 1 | 2 | 9 - 7 | 2 | 10 | WWLLD |
| 3 |
 Apollon |
6 | 2 | 1 | 3 | 5 - 7 | -2 | 7 | LLWLW |
| 4 |
 Vaduz |
6 | 0 | 2 | 4 | 5 - 11 | -6 | 2 | LDLLL |
Group F
| Rank | Teams | Played | Won | Drawn | Lost | Differential | Goal difference | Points | Current form |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
 Djurgårdens |
6 | 5 | 1 | 0 | 12 - 6 | 6 | 16 | WWWLL |
| 2 |
 Gent |
6 | 2 | 2 | 2 | 10 - 6 | 4 | 8 | LWDWL |
| 3 |
 Molde |
6 | 2 | 1 | 3 | 9 - 10 | -1 | 7 | LWWLL |
| 4 |
 Shamrock Rovers |
6 | 0 | 2 | 4 | 1 - 10 | -9 | 2 | LLLDL |
Group G
| Rank | Teams | Played | Won | Drawn | Lost | Differential | Goal difference | Points | Current form |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
 Sivasspor |
6 | 3 | 2 | 1 | 11 - 7 | 4 | 11 | WWDLL |
| 2 |
 CFR Cluj |
6 | 3 | 1 | 2 | 5 - 5 | 0 | 10 | WLWLD |
| 3 |
 Slavia Praha |
6 | 2 | 2 | 2 | 6 - 7 | -1 | 8 | WLLWD |
| 4 |
 Ballkani |
6 | 1 | 1 | 4 | 8 - 11 | -3 | 4 | LWLLL |
Group H
| Rank | Teams | Played | Won | Drawn | Lost | Differential | Goal difference | Points | Current form |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
 Basel |
6 | 3 | 2 | 1 | 11 - 9 | 2 | 11 | DDWWL |
| 2 |
 Slovan Bratislava |
5 | 2 | 2 | 1 | 7 - 6 | 1 | 8 | WDWDD |
| 3 |
 Pyunik |
6 | 2 | 0 | 4 | 8 - 9 | -1 | 6 | WWLLL |
| 4 |
 Žalgiris |
5 | 1 | 2 | 2 | 4 - 6 | -2 | 5 | DLLWD |
Knockout
Preliminary knockout round
