Roberto Di Matteo laid the blame for his Chelsea side's 3-2 defeat to Manchester United firmly at the door of referee Mark Clattenburg.
The official sent off Fernando Torres for what he deemed a dive midway through the second half, with TV replays suggesting that Chicharito was offside when he scored the winner for the Red Devils. He had earlier also red-carded Branislav Ivanovic for a professional foul, though the Italian accepted that decision.
"The key decisions from the referee today influenced the result," the manager told Sky Sports. "He sent off Fernando Torres and the third goal is offside - those things have clearly decided the game in the favour of our opposition.
"Torres put the ball through Evans' legs, he's through and then gets kicked on the shin and goes down. It is as simple as that.
|PREMIER LEAGUE LATEST
|12/1||Manchester United are 12/1 with William Hill to beat Arsenal 3-0 on Saturday
“Did he intend to dive? He didn’t choose to go on [running],” he told Sky Sports.
“I think Jonny may have just caught him a little bit, but you can either carry on running, which he could have done, but he chose to go down.
“He could have carried on and scored - that’s what I don’t understand. I would never have missed that chance to go through. I would have taken it anytime.
“I would never have gone down, but he did go down and that’s the issue, and he’s already been booked, so it’s his own fault.”
Sir Alex also admitted Javier Hernandez’s winner was a stroke of luck for the visitors after replays showed the Mexico international was offside when he poked in United’s third goal.
“That’s a bit of luck we got,” he added. “We started the game so well and then just ten minutes or so from half time we lost our way a bit.
“I couldn’t wait for half time, to be honest with you. When they got their second goal after half time, in that moment we had to start performing properly, and I think we did better then.”