David Moyes described Howard Webb's refusal to give Ashley Young a penalty for Hugo Lloris' injury-time lunge at the winger in Manchester United's defeat by Tottenham as "scandalous" and claimed that his team deserved to win the game.
The United manager was scathing of Webb for his decision on Young and his booking of Adnan Januzaj for diving.
"Scandalous, it was a scandal," he said of the Lloris challenge. "Anywhere else on the pitch if you follow through with your foot high it would be a sending off.
"You couldn't do that anywhere else. Goalkeeper comes out, Ashley Young gets the ball before him and Lloris follows through. It's an incredible decision that didn't go our way. In fact, probably one of the worst that I've seen.
"All I can tell you is that it was a stonewall penalty kick. If it wasn't, I don't think we will get any more in the league this season."
Moyes defended his team's performance and said that they had not played badly and deserved to win.
He said: "We didn't finish well enough in the first half, especially for the first 30 minutes.
"We got done on a couple of counter attack goals and just didn't create the final cross or finish."
United slumped to their fourth home defeat of the season as Emmanuel Adebayor (pictured) and Christian Eriksen scored the goals that earned Tottenham a spirited victory.
The result maintained Tim Sherwood's impressive start as Andre Villas-Boas' replacement, with three wins and a draw over the festive period taking them above their opponents.
For Moyes though, the mini-revival has ground to a halt.
Not since 1989 have the defending champions lost on New Year's Day. It is 1986 since United were last beaten four times on home soil by the opening day of January.
These historical statistics obscure the more meaningful ones.
On a day when the biggest challengers for a top four place all won, United now find themselves 11 points behind league leaders Arsenal and five away from a Champions League place.
It is a pretty depressing position for a club so used to winning, with former manager Sir Alex Ferguson on hand in the directors' box to watch it all unfold.
With Rooney restored to Moyes' starting line-up after overcoming a groin injury, United began with the verve expected of a team boasting a six-match winning sequence.
United's best opening fell to Chris Smalling, who charged onto Antonio Valencia's return pass before crashing a shot which appeared to go through Lloris' legs, but actually cannoned wide off them.
Lloris combined with Michael Dawson to deny Welbeck. Slow motion replays suggested the potential for a penalty shout.
But, despite their dominance of possession, other than a Vidic header that bounced wide of a post Tottenham had well covered anyway, that was it from the hosts.
From far less possession, the visitors did much more.
Lennon also provided the cross which Soldado was inches away from reaching as he slid in at the far post.
And, of course, there was the goal. Eriksen deserved a lot of credit for the excellent far-post cross. Adebayor's execution was perfect.
Yet the complete absence of a challenge from Smalling made the striker's task far easier. Rooney in particular looked somewhat frustrated.
Operating in a deep role behind Welbeck, the England forward followed up a physical battle for possession near the corner flag by grabbing Mousa Dembele by the arm to prevent a counter-attack.
A yellow card inevitably followed, which could easily have been matched by Welbeck just before the hour.
Moyes tried to inject some life into his team after the break by throwing on Hernandez and Shinji Kagawa.
In the process, he made a tactical reshuffle that resulted in Tottenham grabbing their second. Valencia's deficiencies as a full-back have already been exposed this season and when Vidic half-blocked a low cross from Lennon, there they were in glaring evidence again.
The South American failed to react to the danger of a bouncing ball, allowed Eriksen to run straight across him and, from six yards, the Dane nodded in.
It seemed like game over but within 60 seconds the deficit had been halved as Welbeck finished brilliantly, dinking the ball over an advancing Lloris after Hernandez had supplied the through-ball.
Hernandez's impudent back-heeled attempt to turn home Adnan Januzaj's near-post cross also nearly paid off.
Rooney and Vidic came close as the hosts reasserted themselves but Tottenham had done enough, and Moyes was left to experience that familiar losing feeling.
Adebayor was carried off on a stretcher after Danny Welbeck's goal having once again proved crucial for his team.
"He's got ice on every part of his body so we can't tell what is wrong with him," Spurs boss Sherwood reported.
"He'll get assessed. He just runs. He runs all day long and is trying his heart out. He's been fantastic for the team but they all did well and it is tough to single anyone out.
"With heart and endeavour it was fantastic.
"It was 110% from all of them. They realise they need a bit more quality, that they can get fitter and get better."