Chelsea only lost one of their 13 Champions League matches last season, their quarter-final second leg at home to Porto, which they lost 1-0. They remained unbeaten in their seven matches played away from Stamford Bridge (W6 D1).
In Champions League history, only one reigning champion has failed to progress from the initial group stage in the following season – that was Chelsea in 2012-13, who finished third in their group before lifting the Europa League that season.
Of the 25 managers to have taken charge of at least 50 Champions League matches, Manchester City’s Pep Guardiola has the best win percentage (63% – 86/136).
With PSG in the same group, Lionel Messi could face Manchester City for a seventh time in the Champions League – the Argentine has scored more goals against City than any other player in the competition (six goals in six games).
Liverpool have progressed from 11 of their 14 previous Champions League group stage participations, including all four under current manager Jurgen Klopp
Liverpool have won just one of their six meetings with Atletico Madrid in all European competition (D2 L3), losing home and away against them in 2019-20 as the Spanish side knocked them out in the last 16.
Only Real Madrid, Barcelona and Bayern Munich have played more Champions League matches than Manchester United (230), with the Red Devils one of just five sides to have 100 or more wins in the competition (121).
The four Champions League meetings between Manchester United and Villarreal have produced no goals, the most played fixture in the history of the competition to see no goals scored.