Group C
AS Roma 0 – Atletico Madrid 0
Spanish giants Atletico Madrid began their new UCL campaign with a goalless draw against the Italian hosts AS Roma.
Atletico created many chances as they produced ten shots on target but failed to beat the hosts’ goalkeeper Alisson.
Chelsea 6 (Pedro 5′; Davide Zappacosta 30′; Cesar Azpilicueta 55′; Tiemoue Bakayoko 71′; Michy Batshuayi 76′ & 82′) – FK Qarabag 0
Hosts Chelsea hammered the UCL debutant FK Qarabag by 6-0. UCL debutant FK Qarabag became the first Azerbaijan club to play UCL group stage.
Pedro began the scoreline with an early lead on just 5 minutes which were followed by Davide Zappacosta (30’), Cesar Azpilicueta (55’) and Tiemoue Bakayoko (71’) before Michy Batshuayi netted twice on 76 minutes and 82 minutes respectively.
Group C standings after the end of Round 1
| Position | Team | Matches | Won | Drawn | Lost | GD | Points |
| 1 | Chelsea | 1 | 1 | 0 | 0 | +6 | 3 |
| 2 | Atletico Madrid | 1 | 0 | 1 | 0 | 0 | 1 |
| 3 | AS Roma | 1 | 0 | 1 | 0 | 0 | 1 |
| 4 | FK Qarabag | 1 | 0 | 0 | 1 | -6 | 0 |
(Note: GD = goals differences)