MORE: AFL Teams Round 5
Judd was one of five inclusions for the Blues, with Jeff Garlett and Jarrad Waite both added to the 25-man squad to take on the Western Bulldogs on Sunday.
Michael Jamison (leg) and Troy Menzel (hamstring) are out injured, while Nick Graham was dropped. Matthew Watson, Tom Bell and Simon White were the other ins, although they might struggle to make the final team.
The Dogs look set to replace Dale Morris (suspended/ankle) with Michael Talia, while Luke Dahlhaus and potential debutant Marcus Bontempelli have also been added to the squad.
Sydney coach John Longmire dropped O'Keefe and Gary Rohan for their clash against Fremantle at the SCG on Saturday, while Tom Mitchell is also out with an ankle injury.
Into the side comes Craig Bird, Jake Lloyd and Brandon Jack. Kurt Tippett will line up in the reserves alongside O'Keefe after recovering knee tendinitis.
The Dockers welcome back Chris Mayne and Nat Fyfe in place of omitted duo Josh Simpson and Hayden Crozier.
In the Easter Monday blockbuster, the Cats have lost Josh Caddy to injury with Jordan Schroder or Jackson Sheringham his likely replacement.
The Hawks welcome back Ben McEvoy, Ben Stratton and Brian Lake with Liam Shiels (shoudler) and Matt Spangher (ankle) both out injured.
Collingwood are unchanged for their Saturday clash against North Melbourne, with the Kangaroos recalling Daniel Currie in place of the omitted Robin Nahas. Jack Ziebell misses again.
West Coast have regained guns Darren Glass, Chris Masten, Luke Shuey and Matt Rosa, and also included Mark Hutchings for their match against Port Adelaide on Saturday night.
Will Schofield, Pat McGinnity, Sam Butler, Scott Lycett and Brent Colledge were all dropped. Nic Naitanui was named, although Lycett and Callum Sinclair are both emergencies should the Eagles require a late change.
The Power made just one change with All Australian Chad Wingard returning for the injured Jack Hombsch (hamstring).
Essendon veterans Paul Chapman and Dustin Fletcher return for their clash against St Kilda, along with Paddy Ryder and David Myers.
As expected Brendon Goddard misses with a groin, while Dylan Van Unen and Travis Colyer were omitted and Jason Winderlich was rested.
The Saints lost David Armitage (knee) and Nathan Wright (leg) to injury, and dropped Billy Longer, Beau Maister and Shane Savage.
Tom Hickey returns to the side, along with Jack Billings, Adam Schneider, Seb Ross and former Giant Josh Bruce.
The Crows have included Tom Lynch in their 25-man squad to face GWS with the Giants adding six to their squad including Devon Smith and boom youngster Tom Boyd, but they have lost Heath Shaw to a hamstring injury.
Finally, Melbourne have added Jack Fitzpatrick, Neville Jetta and Jimmy Toumpas to their squad for the clash against Gold Coast with Brandon Matera the likely replacement for the injured Clay Cameron (shoulder).