Ferguson:
"I think the two occasions we are talking about this season, there is no question in my mind and lots of people's minds that there is an unfairness about it completely.
"The Portsmouth sending-off from the pictures we have seen is quite ridiculous. Cristiano never touched him. On Saturday, quite clearly he was tripped. Why would you go down when you can score a goal? The referee has reacted far too quickly. He's almost being punished for his success.
"It's worrying for us because it feels as if he is being punished for his success and I don't like that at all.
"In my mind - and in a lot of people's minds - there has been a lot of unfairness."
Ronaldo:
"What the boss says is true, but I don't want to speak about referees."