Kenny Dalglish wants to see greater consistency from match officials after Jay Spearing's red card cost Liverpool in a 1-0 defeat at Fulham.
The Reds midfielder was dismissed after 72 minutes of a keenly-fought encounter at Craven Cottage.
Spearing dived in on Moussa Dembele, catching the Cottagers forward after first winning the ball.
Leaving the ground went against the 23-year-old, with his challenge deemed to be reckless.
Dalglish believes Spearing might have got away with the tackle on a different day, with 'interpretation' now a buzz word in Premier League refereeing.
"He has won the ball with the first thing but he has probably upset the referee with his follow through," the Reds boss told Sky Sports.
"But he has won the ball first and it's not his fault somebody is standing there. Sometimes you see them result in a red, sometimes they get away with it.
"You can go through every referee decision and find a problem with it, I think the problem everyone has at the moment is the level of interpretation and that's not consistent."
While disappointed with that particular call, Dalglish believes Liverpool were unfortunate to leave the capital empty-handed on Monday night.
"I think we would have taken something from the game if we had been left with 11 men," he said.
"For us, we played as well as we have been playing but you have to do enough to win the game. I think we did enough to come away with something, but we haven't done it.
"We need to brush ourselves down and get on with it and not feel sorry for ourselves. The lads put in a great effort to try and win the game, even when we went down to 10 men we had a couple of close things."