Jurgen Klopp insisted Liverpool still have it all to do in the second leg of their Champions League semi-final against Villarreal, despite the first leg ending in a convincing 2-0 win.

The Reds carved out their advantage during a two-minute second-half spell that saw Pervis Estupinan put through his own net and Sadio Mane get on the scoresheet.

The visitors managed just a single shot across the 90 minutes, one which failed even to test Alisson in the Reds' goal.

However, Klopp is taking nothing for granted ahead of the return leg in Spain next week, saying at a media conference after the game: "The full work is [left] to do. Nothing happened yet. 

"You play a game and it's 2-0 at half-time, you have to be completely on alert, you have to be 100 per cent in the right mood, you have the play the second half like you played the first. 

"There's nothing to defend, if you do that you give all the advantages you might have had away immediately. 

"We know we go there and it will be a tricky atmosphere for us, different to tonight. 

"Those players, you saw it tonight, they fight for the coach with all they have. What I like was that everybody could see that we fight with all we have and it's always the same. 

"If they beat us with a result that brings them to the final then they deserve it and, if not, then we deserve it. That's how the competition is."

Liverpool had taken 12 shots without scoring in an opening period that saw Villarreal frustrate - a theme of their march to this stage of the competition. 

But Klopp did not ask his team to change things up during the half-time break, instead asking for more of the same from his players.

He added: "We spoke at half-time, I thought we looked really fresh in the first half and had good legs. 

"It's intense for us to play the way we play but it's intense for the opponent to defend us in that way as well.

"It was the challenge, how it is for all human beings, when you try and you fail and try and fail [not to] think, 'Come on, it's not my day!' 

"We really had to stay positive and try and fail, try and fail, and keep trying. And that's what we did."