He has scored twice in six matches this term, though he had only one more goal at this stage of the 2017-18 campaign.
Firmino's rare absence from the team gave Daniel Sturridge the chance for his first Champions League start for the club more than five years after joining them and he repaid Klopp's faith with the opening goal from his first chance.
"Last year what did he score, three in his first six games?"
"No-one remembers that [how he started last season]", said Klopp.
"On the defensive side, the last two games he was outstanding, perfect", Klopp continued.
"He had fantastic offensive situations in both of the last games".
The chorus of You'll Never Walk Alone under the lights is enough to pick up even the least motivated of players and the enthusiasm goes hand in hand with Jurgen Klopp's gegenpressing style. I never do that - only supporters can do that.
August 25 marks the last time Salah found the net, when he scored against Brighton & Hove Albion and the Egyptian also had performance to forget against Paris Saint-Germain, nearly costing Liverpool the points. But it's completely normal that everyone expects this.
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"We don't expect that".
"We don't expect that - but we want him to score as often as possible".
"I have no clue yet what I will say in the team meeting but I don't think that putting more pressure on, saying it will be historical or whatever would help. We still played football and that was a really big step in the season so far", he added.
"We are talking about having a £50m player at your disposal because he is potentially a world-class striker".
Opta point out that Liverpool are unbeaten in their last 23 Premier League games at Anfield (W15 D8), their best run in the competition since August 2009, and have kept a clean sheet in each of their last seven Premier League home games.
"What was it previous year?"
Paris St Germain's Kylian Mbappe was kept in check by Liverpool's Andrew Robertson for the majority of their Champions League defeat at Anfield (Martin Rickett/PA).
Liverpool take on Southampton in just under an hour and team news has been released.