Gold Coast coach Stuart Dew hopes the AFL club's best wins are still to come after a 24-point victory over Sydney, but the greatest upset of the modern era has set the bar pretty high.
The Swans' top-four hopes were dealt an almighty blow at the SCG on Saturday, when John Longmire's former right-hand man Dew successfully plotted the downfall of his old employer.
TAB suggested it was the biggest AFL upset on their books since 1995, paying out $17 on a result few thought possible.
"I can't believe it, to be honest," Suns co-captain Steven May told Fox Footy after the final siren.
May wasn't alone, for good reason.
Gold Coast's ninth meeting with the Swans was widely expected to be a percentage-booster for the hosts.
The Suns had lost 11 games straight. They hadn't belted out the club song since April 22 and were minus co-captain Tom Lynch and prime movers David Swallow and Jack Martin.
But the visitors produced fierce pressure and withstood a final-quarter comeback to triumph 12.16 (88) to 8.16 (64).
"Hopefully they're yet to come but it is the first time we've beaten Sydney, who are much respected across the league," Dew said when asked if it was the greatest win in the expansion club's short existence.
"They'll be busy during September and we won't be.
"So we've got to keep working hard ... but I'm so proud."
Gold Coast missed six shots before Touk Miller finally slotted their first goal in the 23rd minute, at which point the Swans had five goals and all the momentum.
The Suns then dominated the second and third quarters, kicking eight goals to zip. No team in AFL history had previously kept the Swans goalless in consecutive quarters at the SCG.
Dew wouldn't be drawn on whether the performance could convince Lynch, Swallow and other stars to stick with the battling club.
"But I think what we saw today was some spirit among the club," he said.
"Players wanted to play for each other.
"If we just keep going about our work and play like that then that will take care of itself."
Sydney's percentage dipped to 114.2, meaning they went down the ladder and handed fourth spot to Port Adelaide.
The latest twist in the race to the finals could have major ramifications for Longmire's team, who have a tricky run home.
"Regardless of where you are on the ladder, teams are going to get momentum at different stages. We didn't adjust," Longmire said.
Swans superstar Lance Franklin was held goalless by Rory Thompson, while May was also outstanding in defence.
Aaron Young booted four goals, including a final-quarter settler that came after the Suns' lead was trimmed to seven points.
Gold Coast snatched defeat from the jaws of victory during a final-quarter capitulation against St Kilda in round 13, but Lachie Weller nailed the sealer this time and there was no doubting their composure.