Pearce Hanley has been ruled out of Saturday's QClash with a hamstring injury.
Hanley was named in the team on Thursday evening, however, pulled up sore following the team's final training session on Friday.
Top 10 draft pick and GC Academy product Jack Bowes comes into the senior side to replace the Irishman.
Brad Scheer is now listed as an emergency.
The SUNS take on Queensland rivals Brisbane Lions in Round 21 of the AFL Premiership Season, 4.35pm Saturday August 12 at the Gabba.
SUNS members and fans are encouraged to make the trip up the M1 to support the team, with full access members able to scan their membershuip card at the gate for free entry.