CARLTON skipper Chris Judd has shrugged off a minor heel injury to lead his side through a spirited 90-minute training session at Visy Park on Friday.

Judd, 27, didn't take part in the Blues' NAB Cup opening round fixture that saw them prevail over Richmond but fall to Collingwood to depart the pre-season competition.

Coach Brett Ratten is on record as saying that he would take a conservative approach with his game-changing star as he enters his 10th pre-season and the tactic looks set to bear fruit with the dual Brownlow medallist moving freely throughout.

Ratten had the luxury of putting a large group through its paces with just under five weeks until the opening match of the premiership season against Richmond.

"We'd be about an eight [out of 10]," Ratten said when asked to rate his side's pre-season on radio station SEN.

"I think we've got a few players that will come back next week into the NAB Challenges series, but everything is going really well and pretty much where we expected it to be."

Andrew Carrazzo and Heath Scotland were confined to stationary bikes for the duration of the session.

Brock McLean, Matthew Kreuzer, Ryan Houlihan, Jarrad Waite and Simon White only took part in handball drills for the first half of the hit out with Waite and White then running the boundary for the last 30 minutes of the session.

Lachie Henderson ran laps throughout, but Ratten said the promising forward's preparation had not been derailed by hip cartilage surgery just prior to Christmas.

"His pre-season up to Christmas, before he had to have a minor surgery on his hip, was outstanding," he said.

"He was probably our best-performed trainer to Christmas. He's got a [fitness] base under him. Yes, he has missed a little bit of footy but he won't be far from playing in the next week or two."

A group of six players - Eddie Betts, Robbie Warnock, Shaun Hampson, Ed Curnow, Bret Thornton and David Ellard - had the misfortune to undertake a modified beep test while the main group warmed up nearby.

Ellard, displaying impressive endurance, was the last player left running the gruelling shuttle sprints with the group allowed just a short break before joining the rest of the squad for the main session.

Setanta O'hAilpin was restricted to the role of spectator by the rolled ankle he suffered in the NAB Cup opener.

Chris Judd is a $426,600 midfielder in the Toyota AFL Dream Team competition