PORT Adelaide will be without two of its biggest stars in its must-win clash against Richmond on Saturday, with Robbie Gray (hamstring) and Chad Wingard (concussion) both ruled out.

The Power have also dropped out-of-form ruckman Matthew Lobbe and Karl Amon as they seek to get their spluttering season back on track, while defender Jackson Trengove misses through suspension.

Jared Polec comes into Port's team along with Brendon Ah Chee, Jarman Impey, Dougal Howard and Nathan Krakouer, who is straight back into the senior side after a club-imposed five-week suspension.

The injury list: Your club's sidelined players

Richmond will be bolstered by Brett Deledio's return for his first game of the season, with the two-time All Australian finally putting a quadriceps injury behind him. 

The Tigers also recalled ruckman Shaun Hampson and omitted former Giant Jacob Townsend, while they will be without a star of their own as key defender Alex Rance starts a two-game suspension.

The Western Bulldogs have replaced injured defender Matt Suckling (ankle) with key defender Fletcher Roberts in their only change for Friday night's top-of-the-table clash against North Melbourne.

North has named an unchanged team for the second week running. 

St Kilda has rested 2014's No.1 draft pick Paddy McCartin from Saturday's game against Melbourne, while Jack Lonie and Tom Lee have been omitted. 

The Saints have brought in first-year midfielder Jade Gresham, Blake Acres and forward Tim Membrey, who will play his first senior game for the season. 

Melbourne has named Christian Petracca, who was taken one pick after McCartin in 2014's national draft, for his senior debut, omitting Angus Brayshaw, that year's No.3 pick.

Fremantle has resisted the temptation to make wholesale changes in the wake of its disappointing loss to Carlton last Sunday.

The Dockers regain skipper David Mundy for their game against the Crows at the Adelaide Oval on Saturday and have recalled Connor Blakely, with Michael Johnson (hamstring) and Nat Fyfe (leg) the only players to go out of their side.

Adelaide has named an unchanged 22.

Greater Western Sydney has made one change ahead of its clash against reigning premier Hawthorn at Spotless Stadium on Saturday, replacing the injured Devon Smith (knee) with Rhys Palmer.

The Hawks have named Kieran Lovell to make his debut and recalled Daniel Howe, while wingman Billy Hartung has been omitted and Will Langford (corked quad) was ruled out.

Gold Coast's injury woes have worsened with Adam Saad (hip) joining Michael Rischitelli (shoulder) on the sidelines this week, but the Suns have regained star midfielder Dion Prestia for their clash with Geelong at Skilled Stadium on Saturday night. 

They have also brought in Henry Schade, Ryan Davis and debutant McKenzie Willis, while omitting Luke Russell and Callum Ah Chee.

Geelong has recalled Lachie Henderson after resting the former Blue last round, while Jed Bews also comes in for his first game of the year.

The Cats have rested Tom Ruggles and omitted Cory Gregson.

The Brisbane Lions will be without Tom Cutler (shoulder) and Josh Green (general soreness) when they take on the Sydney Swans at the Gabba on Sunday, but have named Sam Mayes, Nick Robertson, Billy Evans, Daniel McStay and debutant Ben Keays in their squad of 25. 

The Swans has named Aliir Aliir for his AFL debut and brought in Toby Nankervis, Jack Hiscock and Zak Jones in they squad.

Essendon has brought Ryan Crowley, Jonathan Simpkin and James Polkinghorne into its extended squad for Sunday's clash against Carlton at the MCG, and has yet to make any changes to the 22 that lost to Collingwood on Anzac Day. 

The Blues could not consider Dylan Buckley (calf) and Charlie Curnow (illness), but have named experienced defender Michael Jamison, Simon White, Denis Armfield, Jason Tutt and Nick Graham in their squad.

Collingwood has resisted any temptation to recall forward Travis Cloke for its game against West Coast at Domain Stadium on Sunday. 

The Pies have been forced to overlook Travis Varcoe (hamstring), but have named Ben Sinclair, Tim Broomhead, Tom Langdon and Matthew Goodyear in their extended squad. 

The Eagles welcome back ruckman Scott Lycett from suspension and have named Patrick McGinnity, Mark Hutchings and potential debutant Tom Cole. 

Fraser McInnes is the only omission at this stage from the West Coast team defeated by the Swans last Saturday.

Friday, April 29

NORTH MELBOURNE v WESTERN BULLDOGS at Etihad Stadium, 7.50pm AEST

North Melbourne
No changes

Western Bulldogs
In: F.Roberts
Out: M.Suckling (ankle)

Saturday, April 30

MELBOURNE v ST KILDA AT Etihad Stadium, 1.45pm AEST

Melbourne
In: C.Petracca
Out: A.Brayshaw 
New: Christian Petracca (Eastern U18)

St Kilda
In: J.Gresham, T.Membrey, B.Acres
Out: P.McCartin (managed), J.Lonie, T.Lee

ADELAIDE v FREMANTLE at Adelaide Oval, 1.40pm ACST

Adelaide
No changes

Fremantle
In: D.Mundy, C.Blakely
Out: N.Fyfe (leg), M.Johnson (hamstring)

GREATER WESTERN SYDNEY v HAWTHORN at Spotless Stadium, 4.35pm AEST

GWS
In: R.Palmer
Out: D.Smith (knee)

Hawthorn
In: D.Howe, K.Lovell
Out: W.Langford (corked quad), B.Hartung
New: Kieran Lovell (Kingborough)

RICHMOND v PORT ADELAIDE at the MCG, 7.25pm AEST

Richmond
In: B.Deledio, S.Hampson 
Out: A.Rance (suspended), J.Townsend 

Port Adelaide
In: N.Krakouer, J.Polec, B.Ah Chee, J.Impey, D.Howard
Out: M.Lobbe, R.Gray (hamstring), J.Trengove (suspension), C.Wingard (concussion), K.Amon

GEELONG v GOLD COAST at Skilled Stadium, 7.25pm AEST

Geelong
In: L.Henderson, J.Bews 
Out: T.Ruggles (managed), C.Gregson

Gold Coast
In: R.Davis, D.Prestia, H.Schade, M.Willis 
Out: M.Rischitelli (shoulder), L.Russell, A.Saad (hip), C.Ah Chee 
New: Mackenzie Willis (Kingborough)

Sunday, May 1

BRISBANE LIONS v SYDNEY SWANS at the Gabba, 1.10pm AEST

Brisbane Lions
In: S.Mayes, N.Robertson, D.McStay, B.Evans, B.Keays 
Out: J.Green (soreness), T.Cutler (shoulder)
New: Ben Keays (Redland)

Sydney Swans
In: A.Aliir, T.Nankervis, Z.Jones, J.Hiscox
Out: T.Richards (eye socket)
New: Aliir Aliir (East Fremantle), Jack Hiscox (Sydney University)

CARLTON v ESSENDON at the MCG, 3.20pm AEST

Carlton
In: D.Armfield, M.Jamison, S.White, J.Tutt, N.Graham
Out: D.Buckley (calf), C.Curnow (illness) 

Essendon
In: Ryan Crowley, J.Simpkin, J.Polkinghorne
Out: -
New: James Polkinghorne (Essendon VFL)

WEST COAST v COLLINGWOOD at Domain Stadium, 2.40pm AWST

West Coast
In: P.McGinnity, M.Hutchings, S.Lycett, T.Cole 
Out: F.McInnes
New: Tom Cole (Bendigo U18)

Collingwood
In: B.Sinclair, T.Broomhead, T.Langdon, M.Goodyear 
Out: T.Varcoe (hamstring)