CARLTON midfielder Andrew Carrazzo says the players back embattled coach Brett Ratten and must take responsibility for the Blues' dramatic fall from grace.

The Blues have lost their past four games and have fallen to 10th on the ladder.

It's a far cry from the premiership flag favouritism they held after demolishing Collingwood by 60 points - the Magpies' last loss - in round three.

Carrazzo said it was up to the leaders to take control as a group, and accepted the players had to share the blame with Ratten.

"When the tough times happen and when the form drops off as a group, it's a leader's responsibility to get everyone up to par and make sure everyone's accountable," Carrazzo said on Tuesday.

"Obviously it's the role of the senior coach to be the face of the club and take the brunt of the criticism but it's about time some of the criticism came back on the players.

"We're the ones out there that are playing, we're the ones who have to lift our performances to get us back up to where we need to be."

Carrazzo said the criticism of Ratten wasn't necessarily unfair as all coaches faced scrutiny when their side failed to perform.

"But, we're all in this together and whether it's Ratts copping the criticism or us, it's not one person that's going to drag us out of it; it's going to us together," he said.

Carrazzo said Ratten had the backing of the players and the board, and had held up well despite the negative glare of the media.

"He hasn't flinched at all. He's been the same today as he was last week as he was 10 weeks ago," he said.

"He's vibrant and energetic and the supporters out there can trust that he's doing absolutely everything in his power to get us back playing good footy."

Defender Michael Jamison, who tweaked a shoulder against Hawthorn on Friday night, trained on Tuesday and Carrazzo expected he would line up against Collingwood this week.

He also said the Blues would take confidence from their last performance against the Magpies, and draw on energy built at training this week when preparing for Friday night's blockbuster clash at the MCG.

"A good week on the track has added to our confidence level, which has been pretty good," he said.

"Confidence is your memories of past successes and that only comes from doing work at training and succeeding in games so it's not really something you can bluff."

The Blues and Pies will compete for the annual Peter Mac Cup, which was introduced in 1993 and aims to raise money for the Peter MacCallum Cancer Centre.

The views in this article are those of the author and not necessarily those of the AFL or its clubs.

Jennifer Witham is a reporter for AFL Media. Follow her on Twitter @AFL_JenWitham.