Peter Crouch says he has "no excuses" for his dismissal in the Carling Cup quarter-final defeat to Chelsea.
The Liverpool striker was sent off for a two-footed challenge on John Obi Mikel shortly after Frank Lampard had scored Chelsea's first goal in the 2-0 win at Stamford Bridge.
But Crouch insists he could have avoided the dismissal if referee Martin Atkinson had pulled up Mikel for an earlier foul in the build-up.
Crouch also claimed Mikel had "gone down like he's been shot".
The England striker told the Liverpool Echo: "Mikel came in with his studs up and that was in the back of my mind. Then I thought there was another foul in there and obviously I've lost my head.
"There are no excuses for the tackle I made but if the referee had pulled the foul up when he should have done it wouldn't have happened.
"A lot was going their way and I think frustration got the better of me.
"You give and take with referees and sometimes the decisions go for you and sometimes they don't so you can't always blame them."
Crouch added that he was far from happy with Mikel's reaction to his second-half lunge.
He added: "What I'm thinking is if you go in on Frank Lampard or John Terry would they roll around like Obi Mikel did? I don't think they would have done.
"Would someone like Carra have gone down like that? I think it's safe to say that he wouldn't.
"Foreign players have brought a lot to our game but that's something you don't want to see. I didn't catch him but he's gone down like he's been shot.
"It's frustrating because I thought we played okay as a team and obviously it was always going to be difficult from the moment I was sent off."