David Moyes believes Manchester United were denied a stonewall penalty in their 2-1 loss to Tottenham on Wednesday.
Ashley Young was brought down in the area by Spurs keeper Hugo Lloris as United chased an equalizer but referee Howard Webb waved away the protests much to Moyes' disgust.
"It was scandalous, a scandal," said the United boss. "If you follow through on a player anywhere else on the pitch with your foot high, it would be a sending-off and a red card. You couldn't do that anywhere else.
"The goalkeeper comes out, Ashley Young gets the ball before him and he follows through.
"It's an incredible decision which didn't go our way, in fact probably the one of the worst I think I saw."
He added: "All I can tell you is that is a stonewall penalty kick. If that isn't given a penalty kick, I don't think we will get any more in the league this season.
"It is reckless, it is late, it is in the penalty box. I don't know what else you can say.
"You'd hope the people who put the referees out there would have a look at it and see if they think the referees are doing as well as they can be."
United dropped to seventh on the table, falling 11 points behind league leaders Arsenal after goals from Emmanuel Adebayor and Christian Eriksen preceded Danny Welbeck's 67th-minute response.
