Walyalup will be without Michael Walters for Saturday’s crucial clash with Narrm at the MCG.
The forward has been ruled out with a calf injury and has been replaced in the starting 22 by midfielder Matthew Johnson.
Johnson is technically an inclusion into the team after starting as a substitute during Walyalup’s round 10 win against Geelong, replacing Nat Fyfe in the third quarter.
Sam Sturt, Neil Erasmus, Will Brodie and potential debutant Karl Worner have been named as the emergencies, with one of those players to be confirmed as the substitute an hour before bouncedown.
The game will be Johnson’s seventh since making his debut in round three, and his fourth game starting on the field after being the substitute in rounds three, four and 10.
He has averaged 16 disposals when playing a full game, including 22 disposals and five clearances against Brisbane in round seven.
Longmuir flagged earlier in the week that Fyfe would play his first full game since round one, and will continue to spend significant time in the midfield.
"We don't feel like we need to sub him out this week," Longmuir said.
"We want him where he can help the team. Josh Treacy and Jye Amiss have shown we can use Fyfe in the midfield more.”
Walyalup will wear a clash version of their 2023 Indigenous jumper, which was designed by Carly Grey in collaboration with Alex Pearce.
Bouncedown for the clash is at 2.10pm EST (12.10pm WST) and will be broadcast live into WA on Channel 7 and Fox Footy and can be streamed on Kayo.
TEAM v NARRM
IN: Matthew Johnson
OUT: Michael Walters (injury)
B: Brennan Cox, Alex Pearce, Hayden Young
HB: Brandon Walker, Luke Ryan, James Aish
C: Jordan Clark, Jaeger O’Meara, Nathan O’Driscoll
HF: Sam Switkowski, Nat Fyfe, Michael Frederick
F: Matthew Johnson, Jye Amiss, Lachie Schultz
R/Fol: Sean Darcy, Andrew Brayshaw, Luke Jackson
I: Josh Treacy, Bailey Banfield, Caleb Serong, Ethan Hughes
E: Sam Sturt, Neil Erasmus, Will Brodie, Karl Worner
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Gallery: Main training 24 May