Gus Poyet has claimed that his Sunderland team were denied a penalty for deliberate handball by Kevin Nolan in their 2-1 defeat to West Ham United on Monday.
A late strike from Adam Johnson was not enough for the Black Cats to overcome the two-goal deficit that had been inflicted on them by Andy Carroll and Mohamed Diame.
However, Poyet feels that things could have turned out differently had referee Howard Webb awarded them a spot-kick when, with the scores at 1-0, Nolan appeared to control the ball with his hand inside the box.
"It was clear, deliberate. He tried to play the ball with his hand," he told Sky Sports News.
"You would need to ask the referee. It was easy to see but that's the way it's been. I hope we get some luck; a decision from the ref or a deflected shot goes in.
"It's about winning now. We have a chance and will go to the end."
The result left relegation-threatened Sunderland winless in seven matches, and four points adrift of safety.
No Data Analysis info
Germany
Switzerland
Hungary
Scotland
Spain
Italy
Croatia
Albania
England
Denmark
Slovenia
Serbia
Austria
France
Netherlands
Poland
Romania
Belgium
Slovakia
Ukraine
Portugal
Turkey
Georgia
Czech Republic