Chelsea came back from 2-0 down to win their League Cup third round tie at Leicester 4-2.
Cesc Fabregas scored twice in extra-time to send the Blues into the fourth round.
Shinzi Okazaki had scored twice for Leicester in the opening half but a goal from Gary Cahill and a spectacular strike from Cesar Azpilicueta put Chelsea on level terms.
Marcin Wasilewski was sent off on 89 minutes for Leicester.
Last season's runners-up Liverpool were through comfortably, having beaten Derby County 3-0 thanks to goals from Ragnar Klavan, Philippe Coutinho and Divock Origi.
Arsenal secured a convincing 4-0 victory at Nottingham Forest with new signing Lucas Perez's doubles sandwiched by goals from Granit Xhaka and Alex Oxlade-Chamberlain, but Everton suffered a 2-0 defeat at home to Norwich, whose opener came from former Toffees forward Steven Naismith.
Bournemouth are also out, having lost 3-2 to Preston in extra-time.
Newcastle progressed with a 2-0 triumph over Wolves, Leeds edged out Blackburn 1-0 and and Reading got past Brighton by a 2-1 scoreline.
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