Carlton's Michael Jamison knows that any AFL key defender underestimates an out-of-form Brendan Fevola at his peril.

Jamison will probably play on Fevola when the Blues play Brisbane in Thursday night's must-win clash at Etihad Stadium.

After a five-goal haul against North Melbourne, Fevola has only kicked three goals in his last two games.

But Jamison said that makes Fevola even more dangerous.

"Especially if you realise he hasn't been in good form and you play him like that," he said.

"As soon as you take Brendan easy, he can kick four in a quarter, as we saw not too long ago.

"You prepare for him to play at his best and I will certainly be doing that."

Jamison and his fellow Carlton defenders kept Fevola to three goals when the former Blue played against his old club in round two.

While Jamison will put plenty of homework into Fevola this week, he said the Blues were more concerned about their own game.

Like the Lions, Carlton badly need a win after losing to North Melbourne and Fremantle before the mid-season break.

"This game was always going to be about us, coming off our last two losses," Jamison said.

"Regardless of who we played, we were going to have to respond.

"It's huge, we want to keep our wins above our losses, we're 7-6, we've given ourselves a reasonable foundation for finals.

"We've put ourselves in a position where it's up to us. We're not going to rely on other teams to win or lose."

Jamison said captain Chris Judd (ankle) and key forward Setanta O'hAilpin (calf) trained on Monday, boosting hopes they would be fit for the Lions.

Judd has made a formal complaint about the Etihad Stadium surface in the wake of his ankle injury, but Jamison has no problems about the turf.

"Personally, I haven't had a problem with it - I don't think we can question a ground where we get the luxury of playing under a roof and playing in great conditions," he said.

"We just have to maybe take it with a grain of salt and feel privileged."

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