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Georginio Wijnaldum's header was his first away goal in the Premier League

Liverpool manager Jurgen Klopp said his side deserved their "big result" as they beat Tottenham to win a fifth straight league game at the start of the season for the first time since 1990.

The Reds emerged impressively from their biggest test so far at Wembley with a victory that was far more emphatic than the final scoreline suggests and keeps them level on points with Chelsea, who are top of the Premier League table on goal difference.

Georginio Wijnaldum scored his first away league goal since joining Liverpool - technology adjudging his header to have crossed the line despite the attempts of back-up Spurs keeper Michel Vorm to clear.

The visitors were dominant almost throughout and doubled their advantage after 54 minutes when Roberto Firmino scored from on the line after Jan Vertonghen turned Sadio Mane's cross on to his own post.

Andrew Robertson and Lucas Moura hit the woodwork for either side but the Reds could and should have made this a more convincing win, with Naby Keita and Mane missing chances to add to their goal tally.

Erik Lamela pulled one back for Spurs deep into stoppage time and Son Heung-min saw a late penalty claim turned down after he was brought down by Mane but it was all too late and Liverpool's triumph was fully deserved.

"What a game from my boys - that was really, really good," Klopp said. "If we win at Tottenham it's a big result.

"Tottenham are one of the best teams in world football, and to come here and perform like that after the international break... I didn't take that for granted.

"We were defensively good, offensively good, and the performance was better than the result. It was perhaps a bit nervy at the end but no problem. I have nothing to be critical about today. If you win games and you're not 100% with the performance it's still three points - I like that. It's a deserved result."

Tottenham manager Mauricio Pochettino said: "I am not disappointed - the game showed how competitive the Premier League is and we played a really good team who started very well.

"In the second half we made mistakes but we were pushing. The goals we conceded came from our own mistakes, but I am calm.

"After we beat Manchester United at Old Trafford I said we still need to improve, and I'm still saying that."

Liverpool's powerful statement

It was the game of the season so far - Klopp

Liverpool's title ambitions have been clear since the arrival of expensive summer acquisitions such as £67m goalkeeper Alisson from Roma to top up other new signings Keita, Fabinho and Xherdan Shaqiri, as well as the £75m purchase of defender Virgil van Dijk in January.

The expectations have been heightened by those four straight wins but a trip to face Spurs at Wembley, where they were well beaten 4-1 last season, was regarded by many as the acid test of those aspirations.

They answered in the most positive manner possible and confirmed their growing status as the team most likely to topple reigning champions Manchester City.

True, Spurs were astonishingly lethargic but it would be unfair to remove credit from Liverpool on the basis of the home side's performance.

The Reds were more vibrant, dangerous and energetic from the first whistle and moments of discomfort when they were not in control were few and far between.

The imperious Van Dijk ruled at the back, Liverpool were dominant in midfield and the pace of Mane and the guile of Firmino were simply too much for Spurs.

Sloppy Spurs suffer in the sun

Harry Kane attempted just 13 passes, fewer than any of his teammates who started the game

Spurs looked like they had recorded a landmark win when they went to Manchester United and came away with a convincing 3-0 victory.

It looked like the sort of statement Pochettino had been seeking - but how the tables have turned since that night at Old Trafford.

Spurs conceded a lead to lose at Watford and to be brutal they were a very serious second best to Liverpool at Wembley.

Pochettino was without injured goalkeeper Hugo Lloris, particularly expensive given Vorm's uncertainty, and Dele Alli - but so many aspects of this performance will have disappointed the demanding Spurs manager.

Spurs looked exhausted and off the pace almost from the first whistle, second to everything, and to see his side look so leg-weary and drained so early in the season will concern Pochettino.

Of course it is early days and far too soon to be raising serious questions about Spurs but the manner in which they were so completely outmanoeuvred by a team they will rightly regard as close rivals was ominous at times.

It could be that Spurs are suffering a hangover from the World Cup as seven of their starting line-up were involved until the semi-final stage.

And, of course, it may have been a very bad off-day.

Pochettino will hope it is the latter after a day of suffering in the Wembley sun for Spurs.

Tottenham Hotspur 1-2 Liverpool: Mauricio Pochettino admits Reds were better

Underrated Firmino exerts his influence

Liverpool's attacking trio of Firmino, Mane and Mohamed Salah have had a devastating impact on the Premier League and Champions League after Klopp brought them together at the start of last season.

Their combination of pace, movement and firepower has wreaked havoc ever since in a manner which strikes fear into the heart of the best defences.

Salah was subdued again but Mane's blistering pace was a constant danger and Firmino's subtle touches and work-rate were a standout.

The Brazilian made a slightly slow start to the season but he has now contributed what proved to be the winning goals in successive away wins at Leicester City and now Spurs.

He has an impact in all areas of the pitch, whether it is scoring from virtually standing on the line to chasing back to near his own corner flag to help with defensive duties.

Firmino is a class all-rounder and it is easy to see why Klopp rates him so highly.

Man of the match - Roberto Firmino

Roberto Firmino has been directly involved in 61 Premier League goals for Liverpool under Jurgen Klopp (38 goals, 23 assists), 16 more than any other player

Wijnaldum's first away goal- the stats

Liverpool midfielder Georginio Wijnaldum's opener was the 19th Premier League goal of his career but the first to come in an away game

His goal came from his 55th shot attempted in away Premier League games

Tottenham faced 10 shots on target in a Premier League home game for the first time since January 2014 v Manchester City

Christian Eriksen's assist for Erik Lamela's goal was his 50th in the Premier League, making him the second player to reach that milestone for Spurs (Darren Anderton, 67)

What's next?

Liverpool open their Champions League campaign on Tuesday at home to Paris St-Germain (20:00 BST), before facing Southampton at Anfield the following Saturday (15:00 BST).

Tottenham face Inter Milan at the San Siro in their Champions League opener on Tuesday (17:55 BST), they then play Brighton at the Amex Stadium on Saturday (17:30 BST).