Klopp withdrew Firmino in the 68th minute and the German explained that he did so with one eye on a hectic period of games over the festive period even though Firmino, who has scored six in in his last seven games, wanted to remain on the pitch. Both of these qualities were evident for the first goal.
Klopp was pleased his players were able to rectify their mistakes of the first half and convert their chances more clinically after the restart.
The first half was littered with occasional flurries of attacking play, but Coutinho's moment of magic was the only moment the crowd were able to rouse themselves from their Boxing Day hangovers.
Since 2009-10, Swansea have averaged less shots than any side through 19 games (8.5 per game), and less shots on target than any other side (2.0 per game).
The visitors were up against it from the outset. "We let them shoot, and that also happens in a football game".
A two-goal lead was just reward for Liverpool's positive approach, but Swansea yet again missed the chance to hit back straight away when Leroy Fer couldn't turn in a cross from Wayne Routledge.
"We are not very good at the back but we should have been more clinical going forward".
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The PM then reached the Amity University ground to address the public.The Metro was ready for public use from 5 pm onwards. At the time, he promised that his government will focus on development and work to create more employment opportunities.
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He offered encouragement when a caller from Virginia wanted to find building blocks under the Christmas tree. At an event in Missouri last month he told supporters, "You don't see "Merry Christmas" any more".
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Speaking to BT Sport after the victory at Turf Moor, the England worldwide said: "I am aware I've equalled Alan Shearer's record".
However, Swansea's hopes of getting anything from this game dwindled when Coutinho dropped a free kick over their defence for Firmino to volley home. There are points Liverpool should not have won but we did get them.
Trent Alexander-Arnold added the third when Andrew Robertson's cross was only half cleared.
First Robertson's cross was only half-cleared, with fellow full-back Alexander-Arnold racing in to win possession and thunder in first league goal off the crossbar.
Liverpool manager Jurgen Klopp had made four changes from the side that drew 3-3 against Arsenal.
After some good work inside the box, Alex Oxlade-Chamberlain scored Liverpool's fifth of the night with the outside of his boot. They will all score.