Manchester United legend Ryan Giggs has described Liverpool's form as "scary" and earmarked them as potential Premier League champions.
Jurgen Klopp's side have made a perfect start to the season in the league after six games and Giggs, a 13-time title winner with United, views their ability to win in different ways as an asset.
"You've got players who've been in the team a couple of years and you've got young players coming through with experience of Jordan Henderson and James Milner so it's a good blend in there," he told Sky Sports.
"Liverpool haven't played well in some games but scraped results, which is actually quite scary because if you're able to do that, that's championship form, so not only the swash-buckling three or four goals, but digging out results is what you need to do to win it."
Giggs added that champions Manchester City rank alongside Liverpool as challengers and Chelsea are an outsider but did not mention United among the teams he expected to battle it out at the top.
"It looks like a case of Manchester City vs. Liverpool for the title, although you can't dismiss Chelsea because they're playing well," he said.
"Remember just two years ago they were the champions and they've got players in that dressing room who know what it takes -- Liverpool haven't got that, but you've got to start somewhere and Liverpool have been impressive.
"As for Man City, I watched them against Lyon and you think something might be wrong and then they go and put on a show against Cardiff. So I'd say it was between those two but you can't discount Chelsea.
"I'd still just give Manchester City the edge purely because Pep Guardiola usually wins second season after winning the league and they've got players who've been there and done it."