Gold Coast coach Stuart Dew couldn't explain his team's second half fade-out against Essendon, saying the SUNS needed to become more resilient to succeed.
The SUNS worked hard in the first two quarters and could have led by more than five points at half-time, but completely fell away in the second half to lose by 44 points.
Essendon piled on nine goals to two after the main break to not only hand Gold Coast its 11th straight defeat but continue a worrying trend.
In the past eight second halves, the SUNS have kicked a total of just 15 goals.
Dew said being unable to sustain the intensity over four quarters was frustrating.
"A different team ran out in the second half," he said.
"We've got plenty of work to do."
Unlike previous matches where a lack of fourth-quarter run cost the SUNS, this time it was a total lack of intensity from early in the third quarter that had the coach baffled.
Four quick goals to Essendon and the game was as good as done.
It was a shame for the home team, who dominated inside 50s in the first half and had five more scoring shots but couldn't establish a bigger buffer.
"They get that first goal and maybe our guys are thinking 'that 60 minutes of hard work is gone' and that's our resilience where we need to get better," Dew said.
"Of course a team's going to come out and want to play (harder), they're looking to play finals this team.
"They're a good football club and had a lot to play for."
After a season riddled with injuries, there might be some help on the way with Michael Barlow (face), Pearce Hanley (shoulder) and Brayden Fiorini (leg) all returning through the NEAFL on Saturday after extended stints on the sidelines.
The trio all impressed against Greater Western Sydney, with Barlow finishing with 44 disposals and Fiorini with 36 and two goals.
"They all played plus-95 minutes and had a good hit-out," Dew said.
"I'd love to have a look at the tape and see how they moved. Can't bring them all back because they've missed significant time."
Dew said despite the losing streak, his teenage brigade of Wil Powell, Charlie Ballard, Brayden Crossley and Will Brodie were all gaining valuable experience.