Demikian juga Manchester United, yang bergabung bersama klub-klub itu berikut Barcelona yang menang tipis 1-0 atas Sporting CP, untuk memimpin klasemen grup, dengan masing-masing mengoleksi enam poin.
Berikut tabel klasemen Liga Champions hingga setelah pertandingan Rabu atau Kamis dinihari (28/9/2017), mengutip uefa.com:
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| Grup A | ||
| Klub | P | Pts |
| Manchester United FC | 2 | 6 |
| FC Basel 1893 | 2 | 3 |
| PFC CSKA Moskva | 2 | 3 |
| SL Benfica | 2 | 0 |
| Grup B | ||
| Klub | P | Pts |
| Paris Saint-Germain | 2 | 6 |
| Celtic FC | 2 | 3 |
| FC Bayern München | 2 | 3 |
| RSC Anderlecht | 2 | 0 |
| Grup C | ||
| Klub | P | Pts |
| Chelsea FC | 2 | 6 |
| AS Roma | 2 | 4 |
| Club Atlético de Madrid | 2 | 1 |
| QarabaÄŸ FK | 2 | 0 |
| Grup D | ||
| Klub | P | Pts |
| FC Barcelona | 2 | 6 |
| Juventus | 2 | 3 |
| Sporting Clube de Portugal | 2 | 3 |
| Olympiacos FC | 2 | 0 |
| Grup E | ||
| Klub | P | Pts |
| Sevilla FC | 2 | 4 |
| FC Spartak Moskva | 2 | 2 |
| Liverpool FC | 2 | 2 |
| NK Maribor | 2 | 1 |
| Grup F | ||
| Klub | P | Pts |
| Manchester City FC | 2 | 6 |
| FC Shakhtar Donetsk | 2 | 3 |
| SSC Napoli | 2 | 3 |
| Feyenoord | 2 | 0 |
| Grup G | ||
| Klub | P | Pts |
| BeÅŸiktaÅŸ JK | 2 | 6 |
| FC Porto | 2 | 3 |
| AS Monaco FC | 2 | 1 |
| RB Leipzig | 2 | 1 |
| Grup H | ||
| Klub | P | Pts |
| Real Madrid CF | 2 | 6 |
| Tottenham Hotspur FC | 2 | 6 |
| APOEL FC | 2 | 0 |
| Borussia Dortmund | 2 | 0 |