Their win was marred, though, when captain Jordan Henderson was dismissed with eight minutes to go, meaning will be banned for next weekend's Merseyside derby, although Firmino added a late third.
"I think they were both yellow cards", he said.
"Maybe I should not talk about it but to explain how hard things are, we had exactly one session to prepare this game", Klopp said.
'We had these games past year, we had to play against teams like this.
With Liverpool beating Watford 1-0 at Vicarage Road, Alexander-Arnold stepped up to take a free-klick in the 76th minute after Adrian Mariappa fouled Roberto Firmino. Controlling it and staying in that mode, being positive, that's new for us.
Spain centre-back Ramos enraged Liverpool with his actions in last season's Champions League final, including a challenge that left Salah lacking full fitness for Egypt's World Cup campaign.
"It was exactly how it had to be in our situation". It was not that clear that we controlled the games, but we controlled [this game]. "We have to win football games".More news: Deepika-Ranveer wedding reception today
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"After halftime, we have to do it again and again, better of course with more rhythm change". "I am not sure if we had the ball in the past when we've played here, they were much more open games - especially the 3-3 we played here". You have to constantly close down a player or space.
With the score level Robertson clipped Will Hughes in the box but referee Jon Moss ignored the hosts' protests.
"So that's why when you look back at it, me and Hendo had a little moment together when we celebrated as a bit of a joke".
In the similar games previous year, we were not that convincing.
"Coming back after an worldwide break and playing a team who only had three or four players away I think, meaning they could train properly - we could only train Wednesday and Thursday - and to play against such an organised team is hard".
Liverpool travelling to Watford lingers loathly in the memory as potential banana skin and the first half made those lingering doubts seem well-founded.