ANDY O’Brien is worried his side’s inability to take their chances is starting to cost them.

Wanderers drew their fourth blank of the season at the Reebok on an afternoon where both sides were wasteful in front of goal.

Sub Ricardo Gardner twice found himself through on Pepe Reina’s goal but was unable to make Liverpool pay.

“Ricardo had a couple of chances and we’ve had one disallowed – I suppose you’d say that’s the story of our season so far,” O’Brien said.

“People say we don’t score enough goals and I think we have been guilty of missing too many chances – not just Ricardo’s today. It’s frustrating but we have got to try and correct it and do it differently against Middlesbrough next weekend.”

Dirk Kuyt had opened the scoring and Wanderers thought they had drawn level through Gary Cahill’s header before referee Rob Styles intervention.

O’Brien held up his hands for a mistake in the build-up to Steven Gerrard’s second-half goal, a strike which put the result beyond doubt.

“At 1-0 we were still in the game. I can apologise for the second goal but it isn’t going to change the circumstances now. I know what I did wrong.

“We had given a good account of ourselves but we are disappointed with the result in the end. We had taken the game to Liverpool in the second half and were playing some decent stuff.”

O’Brien took the diplomatic approach when summing up the game’s major talking point – Cahill’s disallowed goal.

Referee Styles, already somewhat of a villain in these parts after he mistakenly gave a penalty against Jlloyd Samuel for a fair challenge on Cristiano Ronaldo at Old Trafford in September, took centre stage again when he chalked off the defender’s header just before half time.

“People have got plenty of negative opinions of him but once the decision is made, there’s no changing it,” O’Brien said. “People will analyse it, I’m sure, during the week but from where I was I didn’t see a great deal wrong with it.”