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| H | FC Basel | - | Fram Reykjavík | 5:0 (2:0) | ||
| R | FC Basel | - | Fram Reykjavík | 6:2 (3:0) | ||
| H: 18.09.1973 20:00 | R: 20.09.1973 | Sieger: FC Basel | ||||
| H | CSKA Sofia | - | SSW Innsbruck | 3:0 (3:0) | ||
| R | SSW Innsbruck | - | CSKA Sofia | 0:1 (0:1) | ||
| H: 19.09.1973 | R: 03.10.1973 | Sieger: CSKA Sofia | ||||
| H | Crusaders FC | - | Dinamo Bucureşti | 0:1 (0:1) | ||
| R | Dinamo Bucureşti | - | Crusaders FC | 11:0 (4:0) | ||
| H: 19.09.1973 | R: 03.10.1973 | Sieger: Dinamo Bucureşti | ||||
| H | TPS Turku | - | Celtic FC | 1:6 (1:2) | ||
| R | Celtic FC | - | TPS Turku | 3:0 (2:0) | ||
| H: 19.09.1973 18:00 | R: 03.10.1973 20:45 | Sieger: Celtic FC | ||||
| H | Waterford AFC | - | Újpesti Dózsa SC | 2:3 (1:1) | ||
| R | Újpesti Dózsa SC | - | Waterford AFC | 3:0 (1:0) | ||
| H: 19.09.1973 18:45 | R: 03.10.1973 18:00 | Sieger: Újpesti Dózsa SC | ||||
| H | Crvena Zvezda | - | FKS Stal Mielec | 2:1 (1:0) | ||
| R | FKS Stal Mielec | - | Crvena Zvezda | 0:1 (0:1) | ||
| H: 19.09.1973 19:00 | R: 03.10.1973 17:00 | Sieger: Crvena Zvezda | ||||
| H | Viking FK | - | TJ Spartak TAZ Trnava | 1:2 (0:2) | ||
| R | TJ Spartak TAZ Trnava | - | Viking FK | 1:0 (1:0) | ||
| H: 19.09.1973 19:00 | R: 03.10.1973 15:00 | Sieger: TJ Spartak TAZ Trnava | ||||
| H | Zorya Voroshilovgrad | - | APOEL Nikosia | 2:0 (2:0) | ||
| R | APOEL Nikosia | - | Zorya Voroshilovgrad | 0:1 (0:0) | ||
| H: 19.09.1973 19:00 | R: 03.10.1973 | Sieger: Zorya Voroshilovgrad | ||||
| H | Jeunesse Esch | - | Liverpool FC | 1:1 (0:1) | ||
| R | Liverpool FC | - | Jeunesse Esch | 2:0 (0:0) | ||
| H: 19.09.1973 19:30 | R: 03.10.1973 20:30 | Sieger: Liverpool FC | ||||
| H | Vejle BK | - | FC Nantes | 2:2 (2:1) | ||
| R | FC Nantes | - | Vejle BK | 0:1 (0:0) | ||
| H: 19.09.1973 19:30 | R: 03.10.1973 20:30 | Sieger: Vejle BK | ||||
| H | Bayern München | - | Åtvidabergs FF | 3:1 (1:0) | ||
| R | Åtvidabergs FF | - | Bayern München | 3:4 (2:0, 3:1, 3:1) i.E. | ||
| H: 19.09.1973 20:00 | R: 03.10.1973 19:30 | Sieger: Bayern München | ||||
| H | Dynamo Dresden | - | Juventus | 2:0 (2:0) | ||
| R | Juventus | - | Dynamo Dresden | 3:2 (3:1) | ||
| H: 19.09.1973 20:00 | R: 03.10.1973 21:00 | Sieger: Dynamo Dresden | ||||
| H | Club Brugge KV | - | Floriana FC | 8:0 (5:0) | ||
| R | Floriana FC | - | Club Brugge KV | 0:2 (0:0) | ||
| H: 19.09.1973 20:00 | R: 03.10.1973 15:30 | Sieger: Club Brugge KV | ||||
| H | Atlético Madrid | - | Galatasaray | 0:0 (0:0) | ||
| R | Galatasaray | - | Atlético Madrid | 0:1 (0:0, 0:0) n.V. | ||
| H: 19.09.1973 21:00 | R: 03.10.1973 20:00 | Sieger: Atlético Madrid | ||||
| H | SL Benfica | - | Olympiakos Piraeus | 1:0 (0:0) | ||
| R | Olympiakos Piraeus | - | SL Benfica | 0:1 (0:1) | ||
| H: 19.09.1973 22:45 | R: 03.10.1973 19:30 | Sieger: SL Benfica | ||||
