With every passing week his name is chanted by the Kop with greater gusto.

Andy Robertson may have endured a difficult start to his Liverpool career but the Scottish left-back has put that firmly behind him in impressive fashion.

Having shone on his Champions League debut against FC Porto, the 23-year-old delivered another outstanding performance in Saturday's 4-1 victory over West Ham.

The plaudits from the stands shortly after Robertson had put the Reds' fourth goal on a plate for Sadio Mane at Anfield were richly deserved. The bear hug from a beaming Jurgen Klopp after the final whistle provided another ringing endorsement.

“I thought he was the best player on the pitch,” said Match of the Day pundit Alan Shearer.

“He was absolutely superb – pace, energy and he provided great quality.”

Strong in the tackle and alert to danger around him, Robertson was rock-solid defensively and always offered an outlet going forward.

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Mohamed Salah should have scored from one inviting delivery to the back post in the first half. Robertson's drive and endeavour was epitomised by the flowing team move which wrapped up the points.

After receiving the ball from Loris Karius, he off-loaded to James Milner and tore off down the left wing. Roberto Firmino found Robertson and rather than simply fizz it across the face of goal, he had the composure to look up and pick out Mane.

The £10million deal Liverpool struck with Hull City last July increasingly looks like an absolute steal.

Robertson has earned his place in Kopites' affections with the consistency of his displays over the past three months but there are also other reasons why they have taken him to their hearts.

For a start, fans identity with him. They love his raw passion and total commitment to the cause.

Kop legend John Aldridge recently likened that bond as similar to the one the fist shaking left-back Joey Jones enjoyed in the 1970s.

Robertson's path to Anfield was different than any of his team-mates. He's had to scrap for everything.

Celtic released him at the age of 15 because they felt it was too small to ever make the grade.

Five years ago he was juggling playing in the amateur ranks for Queen's Park with working full-time at Hampden Park answering the phones and taking orders for tickets.

He had agreed with his parents to give it one more year to pursue his ambition of making it in the professional ranks. He was considering a career as a PE teacher.

“I was working 9am to 5pm at Hampden and then having to train at 6pm,” he told the ECHO earlier this season.

A move to Dundee United in June 2013 realised his dream of turning pro and after being crowned PFA Scotland Young Player of the Year he was snapped up by Hull a year later.

(Image: (Photo by Mark Runnacles/Getty Images))

Robertson doesn't live in a bubble. This is a man with a social conscience, who asks family and friends to make donations to food banks rather than giving him birthday presents.

Most great Liverpool teams have boasted at least one combative Scotsman and that tradition is being maintained.

Supporters admire the manner in which he has forced his way into Klopp's plans after a baptism of fire.

Robertson, who became a father back in August when his partner gave birth to their son Rocco, initially found life tough after making the leap to Anfield following relegation with Hull.

Playing second fiddle to a resurgent Alberto Moreno wasn't part of the plan when he linked up with the squad for the pre-season training camp in Bavaria.

By late November he had started just three games in all competitions. He sought talks with Klopp, not to moan about his lack of opportunities, but to learn more about the areas of his game the manager believed he needed to improve on.

Robertson redoubled his efforts at Melwood and Moreno's ankle injury opened the door for him.

Recalled at Brighton in early December, he grasped his chance and since then he has looked more and more assured. He has started 13 out of the last 14 Premier League matches having been rested at Burnley on New Year's Day.

The defining image remains the manner in which he hunted down Man City's startled backline during a lung-bursting bout of pressing last month. Anfield roared its approval for his show of tenacity.

Moreno is now fully fit but Robertson's recent eye-catching contribution means his place is safe.

It's been some journey for him from the depths of Scottish football to rubbing shoulders with Europe's elite.

But he's there on merit. He looks every inch a Liverpool player. Not for the first time, Robertson has proved his doubters wrong.