Ronny Deila was left frustrated as his Celtic side failed to make their dominance count in a scoreless draw with Hearts at Celtic Park on Saturday.
The Scottish Premiership champions enjoyed almost two thirds of the possession against a determined Hearts outfit and had 24 attempts at goal.
Visiting goalkeeper Neil Alexander was tested by a mere five of those 24 efforts however and Deila could not hide his frustration afterwards.
“I think disappointed is the wrong word,” the Celtic manager said.
“I’m irritated because our performance today was good, and you can’t create more than we did in the first half.
“We probably had about 70 percent possession and created a lot of chances, but we could talk about that all day long. It’s about scoring goals and we didn’t do that today.”
It could have been worse for Celtic as Efe Ambrose was red-carded in stoppage time at the end of the game for pulling down Sam Nicholson with the midfielder through on goal.
Deila felt there was enough cover to stop Alexander scoring with what would have been Hearts only decent opportunity of the game.
“I don’t think they had a chance in the whole game, apart from maybe at the end when we got the red card and that wasn’t really a goal chance,” he added.
Despite dropping two points at home, Celtic moved to within four points of league leaders Aberdeen who were defeated 2-1 by Inverness Caledonian Thistle in their Highland derby.
Those were the first points shed by Derek McInnes’ Dons in nine league games this season.
Celtic welcome Fenerbahce to Glasgow on Thursday in Europa League action with the Hoops available at 3.50 win Group A.