Kepa Arrizabalaga's error helped Liverpool claim a 2-0 victory over Chelsea, with Sadio Mane at the double at Stamford Bridge.
Sadio Mane scored twice as Kepa Arrizabalaga made another calamitous error in a 2-0 victory for Liverpool over 10-man Chelsea, with Thiago Alcantara conceding a penalty on his debut.
Frank Lampard's side hardly laid a glove on the Premier League champions at Stamford Bridge and their cause was not helped by Andreas Christensen's red card late in the first half, with Mane then scoring twice in the space of four minutes after the restart.
Mane's second was a gift from the much-maligned Kepa, whose days as Chelsea's first choice seem numbered with Rennes goalkeeper Edouard Mendy supposedly close to joining.
Thiago – who came on as a half-time substitute following his £20million move from Bayern Munich – marked his Liverpool debut by fouling Timo Werner to give away a penalty, but Alisson saved Jorginho's spot-kick to cap a miserable day for Chelsea.