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