'Slack' Liverpool got what they deserved in draw with West Brom - Robertson

Liverpool left-back Andy Robertson admits his side did not deserve to win against West Brom on Sunday.

The Reds were held to a 1-1 draw in the Premier League encounter at Anfield, with Semi Ajayi's header in the 82nd minute cancelling out Sadio Mane's early opener.

Liverpool were the dominant force throughout the first half, but they eased the pressure after the break and Robertson feels they made too many mistakes in the second period.

"When you go slack you get what you deserve. When you come up against a Sam Allardyce team you know they will stay in it and take the one chance they get," the Scotland international told Sky Sports.

"We created a lot of chances in the first half and then in the second half it was as if we didn't want to do it again. We went slack. Every one of us made a mistake in the second half which can't happen. Credit to West Brom for the way they played the second half.

"You know they will look to frustrate you and play the game down and hit you on the counterattack. We didn't let them do that in the first half and then they grow with confidence the longer it goes 1-0.

"We should be experienced enough to see it out and build on the 1-0. We should have been 2-0, 3-0, maybe 4-0 up at half-time. We were dominating and it was up to us to take the chances but we also should be professional enough to win 1-0 if we have to. We will take the point and move on. We can't dwell on it but it's a huge disappointment.

"I've been in a Championship team that has come up and you want to frustrate the big teams and get that one chance you can get and that's exactly what happened. Credit to them. They were great in the second half but we need to be so much more professional. We didn't do that enough and that is frustrating."

Liverpool remain top of the table after 15 matches and are three points ahead of local rivals Everton.