Both sides are undefeated after three rounds with the Blues, first, enjoying a percentage of 325.19 and the second-placed Saints one of 184.09, meaning the winner will sit a game clear on top of the Hampden league table.

But Chris McLaren's side will face the Blues without Harrington (hamstring), Damian O'Connor (hamstring) and the Greater Western Victoria Rebels-listed Clem Nagorcka (foot injury).

Koroit's injury toll is now officially starting to pile up, with these three will joining Tom Couch, Will Couch, James North, Jayden Watson, James Gow and Jack O'Sullivan on the sidelines.

The Saints have brought in Seamus Brady, Thomas Mugavin and Brad Bell from the reserves.

Warrnambool also suffered an injury blow after Jed Turland was cut down in the second quarter of his side's 69-point drubbing of Camperdown last week, with his brother Beau stepping into the side.

But the 25-year-old, expected back for Warrnambool's round six game against Port Fairy, was in good spirits at the Blues' training session on Thursday and said Saturday's game at Victoria Park was an exciting prospect.

"I think we'll be very competitive," Turland said.

"Koroit are going to be the benchmark again and that's a credit to them.

"Beating them out there would be great, but I'd rather beat them in September than early May."

South Warrnambool has been forced to make sweeping changes with Hamish Gurry, Nick Thompson, Tanna Blackney-Noter, Jock Blair, Isaac Thomas and Corey Gallichan all out with injury.

Roosters coach Mat Battistello said while he felt for Blair, out for six weeks with a fractured wrist, the play-maker had done enough to get his attention.

But Battistello said he was excited to hand under 18 player Tate Porter his first taste of senior football, as well as bringing in Tom Wilson, Ethan-Jon Harvey, Tim Ryan and Heath Brennan.

South Warrnambool's opponent, Portland welcomes back Zane Barker from an ankle injury and Jake Wilson from an eye injury, with the Tigers leaving out Harry McIntyre and Tom Haylock.

Hamilton Kangaroos have made just the one change after Lachy Dawson's cameo appearance, with key defender Jandre Slabbert returning to the side.

"Jandre really steadies our back six," Kangaroos coach Matt Dunn said. "He's one of the better defenders in the competition."

Hamilton will face Cobden, which has lost Sam Uwland but recalled Charlie Darcy, Ryleigh McVilly and Tom Spokes.

Terang Mortlake has lost Matt Baxter (shoulder) for two to three weeks, while Mac Carlin was omitted. The Bloods will hand a senior debut to James Moloney, with the other inclusion yet to be determined.

"We made him wait for a few weeks, but he's showed enough form over the last few junior seasons to indicate he'll be a very good player for a long time," Terang Mortlake coach Michael Sargeant said.

Port Fairy has made three changes with Jim Conlan, Richard Bamblett and Lachie Glare coming in for George MacDonald, Sandy Robinson and Blake Carroll.

Camperdown has brought in Jack Williams and Pele Manivong for Mitch Danahay (knee injury) and the suspended Fraser Lucas, while North Warrnambool Eagles have named Zac Urquhart, Sam McLachlan and Mitch Bowman on the extended bench.

FULL TEAMS:

Cobden

B: Jia Anderson, Billy McGlade, Jack McGlade

HB: Tarj Anderson, Jack Hutt, Zac Green

C: Tomas Lindquist, Charlie Darcy, Jesse Williamson

HF: Ashley Rosolin, Christian Koroneos, Louis Cahill

F: thomas spokes, Chris Paatsch, Sam Giblett

R: Toby Hawkins, Paul Pekin, Lachlan Davis

Int: Ryleigh Mcvilly, Ned Dalziel, Mitch Reed

Emg: Nicholas Nieuwenhuizen, Ben Berry

In: Charlie Darcy, Ryleigh Mcvilly, thomas spokes

Out: Sam Uwland

Hamilton Kangaroos

B: Christopher Quinn, Taine Morris, Jack Hickey

HB: Jarrod O'Brien , Jandre Slabbert, Sean Barnes

C: Brady Hicks, Tyrone Ross, Luke Uebergang

HF: Hamish Waldron, Hugh Douglas, Sam Brewer

F: Harry Waters, Darcy Russell, Joshua Pepper

R: Levi Dare, Rory Gill, Dylan Starkie

Int: Joseph Franklin, Charles Murrie, Angus Noske

In: Jandre Slabbert

Out: Lachy Dawson

Camperdown

B: Angus Gordon, Brendan Richardson, Luke O'Neil

HB: Jason Robinson, jack williams, Billy Arnold

C: Charlie Brett, Riley Arnold, Matthew Field

HF: Bayley Thompson, Jacob Mahony, Lachlan Bone

F: Joshua Bone, Luke Mahony, Edward Lucas

R: William Rowbottom, Charlie Lucas, Pele Manivong

Int: Chris Dendle, Luke Tyler Ball, Timothy Fitzgerald

Emg: Sidney Bradshaw, James Byrne, Devon Coates

In: James Byrne

Out: Fraser Lucas, Mitchell Danahay

North Warrnambool Eagles

B: Xavier Mills, Reece Scoble, Joseph McKinnon

HB: Will Scriven, Darcy Keast , Thomas O'Leary

C: Jackson Grundy, Matthew Wines, Samuel McKinnon

HF: Luke Wines, Adam Wines, Sam James

F: Jarryd Lewis, Justin Wallace, Tom James

R: Jordan Dillon, Billie Smedts, Sam McLachlan

Int: Liam Stow, Zac Urquhart, Mitchell Bowman, Sam Slattery, Jye O'Brien

In: Zac Urquhart, Sam McLachlan, Mitchell Bowman

Out: Jackson Couch

Koroit

B: Tim Martin, Dallas Mooney, Alex Pulling

HB: Liam Hoy, Todd White, Frazer Robb

C: Jack Gleeson, Lachlan Rhook, Liam M O'Sullivan

HF: Timothy McPherson, Benjamin Dobson, Connor Hinkley

F: Rhys Raymond, Jarrod Korewha, Jayden Whitehead

R: Jeremy Hausler, Sam Dobson, Bradley Bell

Int: Daniel Roache, Thomas Mugavin, Seamus Brady

In: Seamus Brady, Thomas Mugavin, Bradley Bell

Out: Clem Nagorcka, Brett Harrington, Damian O'Connor

Warrnambool

B: Wil Fleming, William Jacobs, Samuel Wilson

HB: Martin Van Rooy, Alexander Shipard, Bradley Bull

C: Austin Steere, Damien McCorkell, Jordan Foott

HF: Jye Turland, Sam Cowling, Travis Graham

F: Jackson Bell, Darren Ewing, Luke Cody

R: Daniel Weymouth, Mitch Bidmade, Thomas Ludeman

Int: Tim Okeeffe, Kurt Lenehan, Beau Turland

In: Beau Turland

Out: Jed Turland

Portland

B: Rhys Egan, Damien Bell, Patrick Pekin

HB: Edmund Pritchard, Sam Hampshire, Zane Barker

C: Felix Jones, Daniel Falcone, Tanner Lovell

HF: Patrick Haylock, Ben Malcolm, Aaron Shepherd

F: Dylan Barr, Jake Wilson, Cooper Anson

R: Tylar Watts, Harris Jennings, Daniel Jackson

Int: Jai Langenberg, Thomas Sharp, David Denboer

Emg: Harry McIntyre

In: Jake Wilson, Zane Barker

Out: Thomas Haylock

South Warrnambool

B: Corey Gallichan, Noah Kol, Harrison Lee

HB: Sam Thompson, Tanna Blackney-Noter, Patrick Anderson

C: Hamish Gurry, Isaac Thomas, Jed Henderson

HF: Brayden Beks, Shannon Beks, Jesse Gallichan

F: Timothy Brown, Charlie Lee, Liam Youl

R: Samuel Kelly, Jock Blair, Brad Miller

Int: Charlie Bradshaw, Manny Sandow, Nick Thompson

Terang Mortlake

B: Tom McKenzie, Harrison Hobbs, Daniel Kenna

HB: Joel Crawley, Ryan O'Connor, Dylan Jones

C: Matthew Baxter, Joseph Arundell, Isaac Kenna

HF: Nicholas Couch, Lachlan Wareham, Tyson Densley

F: Jarryd Gardner, Stephen Staunton, Mitchell Carlin

R: Matthew Arundell, Gus Bourke, Jarryd Hay

Int: Macauley Carlin

To be selected from:

Christopher Baxter, Samuel Crawley

Port Fairy

B: James Imbi, John Anthony Bell, Colin Harwood

HB: Edward Purvis, Matthew Sully, Xavier McCartney

C: Kurt Smith, Kaine Mercovich, Dylan Herbertson

HF: Tyler Hetherington, Samuel McCartney, Tom Sullivan

F: Lachlan Glare, Jake Bartlett, Lochie Gunning

R: Adam McCosh, Isaac Martin, Daniel Nicholson

Int: Richard Bamblett, Jim Conlan, Matthew Pitt

In: Jim Conlan, Richard Bamblett, Lachlan Glare

Out: George Macdonald, Sandy Robinson, Blake Carroll

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