Jürgen Klopp insists semi-final not over despite comfortable Liverpool win

Jürgen Klopp said Liverpool must remain “completely alert” to the threat posed by Villarreal despite dominating Unai Emery’s team throughout the Champions League semi-final first leg at Anfield.

Villarreal had one shot in the entire game, none on target, as Liverpool controlled the tie and established a 2-0 lead through a Pervis Estupiñán own goal plus Sadio Mané’s 20th goal of the season. The Spanish side’s attempt was the joint-lowest number in a Champions League semi-final since the data started being recorded in 2003-04.

Related: Mané helps to give dominant Liverpool first-leg advantage over Villarreal

Liverpool also had two goals disallowed for offside but Klopp, whose team remain on course for an unprecedented quadruple, claims Villarreal will be far more dangerous on home soil next Tuesday.

“It’s 2-0, half-time, no more, no less,” the Liverpool manager said. “It is a dangerous scoreline. How much work is left to do? The full work. Nothing has happened yet. It’s 2-0 at half-time and we have to be completely on alert and 100% in the right mood. We have to play the second half like the first half, as though there is nothing to defend.

“We know we go there and it will be a tricky atmosphere for us. It will be different to tonight. These players, this coach, they will fight for it with all they have. And what I like is that we also fight with it with all we have. If they beat us with a result that takes them to the final, then they deserve it. If not, then we deserve it. That’s how the competition is. We played a really good game and now in five [six] days we play again and we have to make sure we are ready.”

Related: No pause for thought as Villarreal run into relentless Red hurricane

Klopp claimed Liverpool’s