Jurgen Klopp was left confused by Liverpool's first-half performance after the Reds came from behind to beat Wolves in the Premier League.

Hwang Hee-Chan opened the scoring for the hosts at Molineux but goals from Cody Gakpo, Andrew Robertson and an own goal from Hugo Bueno were enough to give the visitors all three points.

It was another slow start from the Merseysiders and Klopp admitted that he was not happy with the opening 45 minutes.

He said: "In the first half I thought, 'WTF?' a couple of times. We were not ready in the first half but Wolves did really well.

"With these boys, some of them we've had seven, eight, nine weeks with, some of them longer, I know if they can be, they are there. Today they couldn't in a lot of moments.

"I know if you get through the first half with a reasonable result, you can turn it.

"The team needed help and we could deliver the help a little bit with the changes and change of system. They were completely different halves

"The same players who looked rusty in the first half, in the second half it looked much easier. 

"Wolves played a super first half but in the second half we were really good and controlled the game."

Jose Sa barely had a save to make in the first half but sent a loose ball forward which led to Robertson's goal late on in the game.

It was a costly mistake and Wolves boss Gary O'Neil admitted a gap in quality cost them three points.

He said: "If you look at the two sides, the gap in quality, it takes a big effort to close that. 

"I thought we did for a very long time. The organisation and structure managed to help us bridge that gap. 

"When we were on top we could have taken one or two of our good situations."