West Ham boss Slaven Bilic cut a disconsolate figure after two contentious refereeing decisions resulted in his side losing 2-0 to Manchester United on Monday.
The Hammers made a promising start at the London Stadium, but were dealt a massive blow on 15 minutes when Sofiane Feghouli received a straight red card following a coming together with Phil Jones.
Both players seemed equally at fault after going into the challenge strongly, although Bilic suggested the United defender played a part in getting Feghouli sent off and should perhaps have been dismissed instead.
Juan Mata fired the Red Devils in front on 63 minutes before Zlatan Ibrahimovic doubled their lead with 12 minutes remaining. However, replays showed that the Swede had been offside, and Bilic was bemused that the goal was allowed to stand.
Commenting on the sending-off, the Croatian coach told Sky Sports: "It was never a red card to be fair. It was a challenge from both of them.
"It was the other way round in terms of who did the more dangerous tackle. It was Jones. Okay he's carrying the ball but he went in with the scissors.
"Phil made a meal of it, but you can't blame him doing that. Maybe he made a meal of it because he went with the dangerous one to save himself.
"You have to see who is doing our challenge. It's Feghouli, who very rarely makes a foul in the game. His foot wasn't high in the air and it wasn't deliberate.
"For me, that was the crucial decision in the game. That early – it killed us. It put the game in a totally different perspective. That decision and the other one [offside goal] were totally unfair to us and totally wrong.
"That offside is a big offside. The players are not sprinting. It can be very hard if they're sprinting – a lot of times we need slow motion. But the players were walking. Good referees should have noticed that it was offside."