Aston Villa defeated the Premier League defending champion Liverpool at Villa Park yesterday night by 7 goals to 2.

It was Liverpool’s first loss of the season and their heaviest in Premier League history as a Jack Grealish and Ollie Watkins phenomenal performance instigated an upset.

Jurgen Klopp believes his players made “massive mistakes” in the 7-2 humiliation at Aston Villa, adding “a game like tonight should not happen”.

Ollie Watkins put the host in front as they cruised into a 4-1 lead at half time.

Errors from goalkeeper Adrian and defender Joe Gomez led to two of the goals scored by Villa and three came from deflections, but Klopp believed that the result was due to his players doing “all the things you should not do”.

Klopp said to Sky Sports: “I can’t explain, I’m not sure, but I can tell you what I saw.

“For different reasons Aston Villa forced all the mistakes we made, we played in their cards.

“Obviously with the first goal, with the second as well, the third massively, the free-kick and all these kind of things, then the game has a specific direction.

“The first goal obviously had an impact but not more than it should, Adrian made a mistake, easy goal for them but we conceded goals like this in the past. We lost obviously the plot.

“Creating in the last third was really good. As Villa won the ball each one was a counter attack so our protection was under average.

“You could see already first half, body language dropped and all these kinds of things. You’re 4-1 down, but how the game was we didn’t think we should stop playing.”

Ollie Watkins goals put the game beyond Liverpool’s reach, even after Mo Salah scored what seemed to be a lifeline John McGinn striked the ball into the net.

Ross Barkley made it 5-1, before Salah put another goal at the back of the net, but two strikes from the skipper Jack Grealish completed the demolition.

Klopp said: “We thought if we do the same stuff but slightly better. But we had to protect it better. We tried the system slightly, made it a bit clearer for the boys but all good moments leaded to nothing apart from the two goals for Mo.

“All their big moments led to a big chance or goal and that makes the difference. They were flying and we were open.

“All the things you should not do in a football match we did tonight. But credit to Aston Villa.

“Yes we conceded deflected goals, one or two unlucky but not a properly blocked ball so our fault as well, but nobody to blame apart from us.”

He was asked why he thought his side had “lost the plot”, the German gaffer replied: “Absolutely unexpected but it happened. For me we put all of our rubbish things, mistakes, in one game.

“Last week Mr [Roy] Keane said it was sloppy. It was not sloppy tonight it was just bad.

“I have to admit that but I cannot change it now.

“I would love to have a training session tomorrow and speak about but the boys go out with the national team.”