Two offside goals at Stamford Bridge on Saturday cost Wigan points, but also stopped us from taking fourth place in the Premiership.
QPR skipper Shaun Derry was sent off by referee Lee Mason for fouling Ashley Young inside the box, even though the United winger had clearly been offside when he collected Wayne Rooney's through ball.
Mark Hughes: "You do discuss it before every game.
"You worry more about decisions going against you and it shouldn't be like that.
"You should have confidence that the referee will get the key decisions right.
"Just lately a lot of managers have lost faith in them.
"It is a difficult job. You have to be strong and really clear.
"You have to be 100 per cent right to give the decisions. At the moment people are guessing and hoping that they get it correct. That was the case today."
Sir Alex Ferguson: "Ashley was a yard offside and I understand why Mark is angry.
"There have been a lot of decisions like that in the last few weeks."