Perth Glory "magnificently contributed" to their own downfall against Melbourne City, according to their coach Kenny Lowe.
While Aaron Mooy was the match-winner for City - Lowe labelled the midfielder "absolute quality" - Perth's coach was more focused on how poorly his team defended in Friday's 5-1 loss.
Erik Paartalu and Connor Chapman's headers - both from Mooy crosses - put City 2-0 ahead within 20 minutes, while Bruno Fornaroli scored the home side's third after side-stepping an opponent in the box.
City coach John van 't Schip had earlier claimed that it could have been 4-4 at half-time rather than 3-1 following Sidnei's header, and Lowe agreed but was bewildered by some of the Glory's defending.
"I thought in the first half, we've had probably the most opportunities we've had all season, and I mean not opportunities that were poor but decent opportunities, and fashioned with good football," Lowe said.
"But you can't give three goals away like that... I think we magnificently contributed to all three."
Harry Novillo and Mooy added two more goals for City in the second half as the Glory slumped to five games without a win in all competitions.
Again both goals could have been prevented.
Perth cleared a corner straight to Novillo for the French to score seven minutes after half-time, while Lowe was unimpressed with Aryn Williams conceding a late penalty that Mooy converted and getting sent off in the process.
The England-born coach though, insisted it's not all bad.
"It's a defining moment and you make choices now. This is an opportunity for people to either step up or step out, including myself," Lowe said.
"So I'm going to find out a lot about myself in the next few weeks, and also the players are going to find out a lot about themselves in the next few weeks. So it'll be an interesting time."
When offered potential excuses such as Perth's injury list or playing in sweltering conditions last week, Lowe responded: "The factor is you can't give away five goals."