Newcastle boss Alan Pardew said Friday's defeat to Manchester United could have turned out differently had the Magpies been awarded in the first half.
Juan Mata appeared to clip Yoan Gouffran's heels, but referee Michael Jones refused to award the away side a spot-kick.
"The referee has got a bad call very wrong," the Newcastle manager said.
"I think that was a penalty. I think Mata's run across the back of a player who is going to head the ball across goal. That's a goal scoring opportunity....
Christmas has been anything but fun for Newcastle United fans. Amazingly, they're still trying to sing their way through it and at times at Old Trafford it would have been difficult for a football outsider to figure out which set of fans had just won 3-1 as the Toon Army backed their team right until the end.
Hot on the heels of the Tyne-Wear derby loss before Christmas, this defeat at the hands of a Manchester United side who might fancy their chances of keeping up with Chelsea was as predictable...