Andy Robertson has detailed the work Liverpool underwent during pre-season that has transformed them into a record-breaking attacking force.

The Reds secured their biggest win at Goodison in almost 40 years when they romped to a 4-1 Premier League triumph over Everton on Wednesday night.

In doing so, Liverpool became the first English top-flight club in history to score at least twice in 18 successive games and the first to manage the feat in 14 consecutive away matches.

Jurgen Klopp's side have now netted 43 times in 14 league games - the highest total in any of Europe's leading leagues this campaign - and Robertson has revealed how the coaching staff this summer pinpointed a key area for improvement.

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"In pre-season we worked on it a lot more in terms of finishing off situations - three v twos, two v ones," said the left-back, who had a hand in three goals at Goodison.

"During the pre-season, most of the lads go away on holiday, but I think the coaches get bored quite quickly and they start to look at what we can improve on!

"I think that was one of them, finishing off situations and counter-attacks and things like that. Pre-season was based on that - and a lot of running as well! - and you are seeing that.

"Long may that continue. I'd love to say to the supporters that we are going to win and score four goals every game, but that's not going to be the case.

"Sometimes we are going to need to win ugly, we're going to need to win 1-0 or 2-1 or whatever it may be, and we need to be as clinical when we only get one or two chances."

Liverpool remain two points adrift of leaders Chelsea in third place, and Robertson added: "We are 14 games in, there is still a long way to go but we are still in the hunt, we are still pushing and it's important we stay in the hunting pack and things will start to open up.

"We are going into a busy period and we are going to need the full squad, to keep pushing in the right direction and if we do that then hopefully we are there or thereabouts."

Two goals for Mohamed Salah moved him on to 19 goals in as many games in all competitions this season and strengthened his position as the Premier League's leading goalscorer.

And Robertson believes the manner in which the Egyptian raced away to net Liverpool's third was evidence of a player at the top of his game.

"(Seamus) Coleman is breathing down his neck, (Jordan) Pickford is closing the angle and it feels as if Mo had all the time in the world," he said.

"That's a sign of what kind of form he is in right now. I always believed he was going to score it.

"I know how hard it is to defend against him, I have to defend against him in training most days. He is an unbelievable player."

Wednesday's win was a first derby win in four for Liverpool, who lost Virgil van Dijk and Thiago Alcantara to serious injury on their last visit to Goodison and were then beaten at home by Everton for the first time since September 1999.

And Robertson, speaking to liverpoolfc.com, said: "Last season was a blow in more ways than one. The game here we picked up two bad injuries and got a 92nd-minute winner chalked off by so close a margin and then we got beat at Anfield.

"It was important we tried to put that right this season. we only got one point against them last season and now we already have there.

"It was important that we went out and tried to play our football and not get involved in anything and try to quieten the crowd. We knew they would be noisy at the start and it certainly helped that we had a good start."