West Brom manager Slaven Bilic fumed at the refereeing decisions that went against his side during their defeat by Manchester United.
After a quiet first-half, there was controversy just a minute after the interval when Bruno Fernandes was adjudged to have fouled Conor Gallagher in the penalty area.
Referee David Coote pointed to the spot but was advised to take a second look on the pitch-side monitor and overturned his decision after reviewing the footage.
Just minutes later, United scored the only goal of the game when Fernandes netted from the penalty spot following a handball.
Bilic believes the first penalty should have stood and fumed at the officials for missing a foul by Fred in the build-up to United's winner.
"Well I am really disappointed. I'm really disappointed with the decision," he told BT Sport. "All those crucial decisions went against us. I've watched it a few times and for me, it's a clear penalty. I don't understand why he overturned it.
"Our penalty, with the new rules, it's handball. It's a bit unlucky but it's handball. Before the handball, it was a clear foul on Gallagher.
"We are talking about instead of 1-0 to us, it's 1-0 to them. That makes a difference, especially playing against Manchester United away, it's game over."
Fernandes explained after the game that he believes he made contact with the ball before colliding with the on-loan Chelsea star.
However, former United defender Rio Ferdinand believes Coote made the wrong decision.
He said: "It's a disgraceful decision. He got it right first time. It's a nailed-on penalty. How can he go against his own decision on that?"
