Chelsea put a terrible week behind them to return to winning ways in devastating style with a six-goal demolition of Southampton.
Having been beaten 4-1 at home to Brentford in the Premier League and then suffering a 3-1 defeat to Real Madrid, Chelsea bounced back in a manner which will give Thomas Tuchel encouragement his side can salvage their Champions League tie in Spain next week.
Tuchel said before kick-off that "things are upside down" after two damaging results but his players responded by hitting the woodwork three times and scoring four in an astonishing first half at St Mary's Stadium.