CARLTON coach Brett Ratten believes Chris Judd has rediscovered his trademark burst of speed and could be poised to make a late Brownlow Medal surge.

While the former Eagles premiership captain has had a major influence on the Blues' improved fortunes this season, he has taken time to regain the zip that was so devastating earlier in his career.

He limped through the second half of his final season with West Coast last year, before requiring post-season groin surgery.

But Ratten said Judd demonstrated with a superb best-on-ground performance against the Western Bulldogs on Sunday night that his pace was back as a major weapon.

"We sort of looked through the game and you watch that chase, he gave Ryan Griffen 10m, 12m headstart and ran him down to touch him and force a kick out of bounds," Ratten said.

"You just think Ryan Griffen is a very quick player and Chris Judd just took that sort of gap off him in a short period of time.

"Maybe the way the game was played helped him as well with his running through the game ... he's thought for a while now he's been at 100 percent."

Despite the early-season fitness queries and pressure of his high-profile move, Ratten said Judd had already made a remarkable impact.

"It's not an easy thing to change clubs and come in and have a massive effect," Ratten said.

"... He's sort of come in with a bit of a bang, I suppose, and really imprinted his style and what he represents in footy."

Ratten said the 2004 Brownlow winner's vote-attracting history – he polled in each of the first eight rounds last year – meant he could again be in the frame for this year's award.

"When he does play well he virtually gets the three [votes]," Ratten said.

"So if you can put in four or five games that you think he's got three votes, well he'll probably get them, he seems to always capture the umpires' eyes and he's a fair player, he plays the ball.

"... So that will give him votes, but I don't know if he's done it consistently enough for the whole year.

"Maybe the last five weeks might tell a different tale."

With the win over the second-placed Bulldogs reviving Carlton's finals hopes, Ratten said they would take confidence into Saturday's crucial clash with Adelaide at AAMI Stadium.

Their previous solid interstate record this season – a comfortable win over West Coast at Subiaco in round seven and a stirring comeback against Port Adelaide at AAMI Stadium in round 11 – further boosted their belief.

"The great thing about the group at the moment is when we do go away there's a lot of unity and you get that bond," Ratten said.

"We take a fair bit out of our interstate performances full stop, the West Coast game and the Port Adelaide game have given us confidence.

"Being together for 48 hours or so and living in each other's pockets, I think that's very good for our young group to go away and be together."