Chelsea boss Roberto Di Matteo blasted the officiating as Chelsea suffered their first league defeat of the season in a 3-2 loss at home to Manchester United and their second in a week following their midweek Champions League reverse at Shakhtar Donetsk.
Di Matteo is adamant there was contact between Fernando Torres and Jonny Evans and believes the Manchester United defender should have been sent off as he denied the Spaniard a goalscoring opportunity.
After the Blues had overturned a two-goal deficit, they were reduced to nine men when first Branislav Ivanovic was dismissed before Torres received a second yellow card for diving following Evans' challenge.
"The key decisions from the referee today probably influenced the result,'' said Di Matteo. "He sent off Fernando Torres and the third goal is offside and it clearly has decided the game.
"So it's a shame, because it was a good game of football with two good teams and the officials ruined it.
"He's (Torres) put the ball between his legs and is through and gets a kick on his shin and he goes down. It's a free-kick for us and I think it should have been a sending off for Evans because he's through to the goal. Everything went for United and that really makes us unhappy.
Evans has backed referee Mark Clattenburg for sending off Torres. Asked whether there was any contact between himself and Torres, Evans told Sky Sports 1: "At the time I didn't feel like I'd made contact but I've seen it again and there was a bit of contact. I didn't feel like it was enough to bring him down.
"He probably realised he wasn't getting the ball and I think the referee's made the right decision in sending him off.''
Ferguson believes Torres had only himself to blame for being sent off.
"Did he intend to dive? I thought he went down,'' said the Scot. "I think Jonny may have just caught him a little bit but he can either carry on running - which he could have done - but he chose to go down. He could have carried on and scored so I cannot understand it. It's his own fault.
"You have to give credit to Chelsea, they never gave in. They showed a great desire to get back in the game. I think the sending off from the right-back was the turning point. I think we wouldn't have won at that point. But we put Chicharito (Hernandez) on and he gets the winning goal and I think the momentum was with us then.''
Ferguson did, however, admit the visitors were fortunate with the winning goal, scored by Hernandez in an offside position.
"They say that the winning goal came from an offside, so that's the bit of luck I think we got,'' he said. "I said before the game we've had some shocking decisions down here. It's very difficult to come here and get all the decisions - I must say that. It's very difficult.''
The United boss even took issue with Antonio Valencia's own booking for diving under pressure from John Obi Mikel.
"I thought that it got a bit nasty," he said. "The booking of Antonio, I can't quite understand, because he's right through. There's no reason for him to go down.
"He was definitely taken, and he's been booked for it, because it was Mikel, you see, and Mikel's already been booked. I think that's the reason the referee had to do that because he would've had to send Mikel off.''
Evans added: "I think that's probably the hardest game we've had this season, especially towards the end of the first half. Chelsea really came at us and put the pressure on us and it was tough. We were probably lucky to see it out 2-1 at half-time.
"You've got to show character in games like this. We came out for the second half and you've got to stand up coming here to Stamford Bridge. It's a tough game, we knew we were going to be under pressure and they get the equaliser and the sendings off in-between that but we managed to finish it off in the end.''
Match-winner Hernandez claims all he is worried about is securing the three points and not if he was offside for his goal.
"We don't care. We win. We have the three points, that's the only thing on my mind,'' the Mexican said. "For some people it will be be very controversial and for other people it won't. We're very happy because we get the three points.''