Liverpool fullback Andy Roberston admits the importance of Roberto Firmino to the Premier League table toppers.
The Reds are enjoying a fantastic start to the season, having won their first four games as they lead the league.
While the likes of Mohamed Salah and Sadio Mane get much of the credit, Roberston believes that Firmino is key to the team's attack.
"With his work-rate, his technique, his goals and his all-round play, I don't think there's anyone like him," the left-back told reporters.
"People will say there are better strikers, but for me what he does is so important to our team. We'd be lost without him. He's world class.
"He does everything, and that's the beauty of Bobby. He can do it all. He's our first line of defence, and I've not seen anybody better at doing that. He presses the defenders and doesn't give them a minute. He comes back and nicks the ball in midfield for us.
"He's so important defensively for us, then he goes up the park and scores goals and makes assists. That's what we need him to do.
"The work he puts in during games is probably more than any other striker in the world."
