GWS have been given a major reality check after slumping to a shock 41-point AFL loss to Sydney in the Battle of the Bridge derby in Perth.

The Giants booted just one goal in the first half and were horribly wayward going forward during their 10.6 (66) to 3.7 (25) loss at Optus Stadium on Thursday night.

It was the equal lowest score in the nine-year history of GWS, matching the 3.7 (25) they scored in last year’s 89-point grand final loss to Richmond.

But they were lucky to even match that mark given all three of their goals came from free kicks; two of which were dubious.

The Giants’ final goal against the Swans came with just 70 seconds left in the match.

The result leaves GWS at 6-5 and in a logjam just to make the top eight.

They had breathed life into their season with recent wins over Richmond, Gold Coast, and Essendon.

But the nature of their loss to the lowly Swans is set to ring major alarm bells.

Although the Giants won the inside 50m count 52-32, their delivery into attack was woeful.

They were error-riddled throughout the contest and generally blew the few good chances they created close to goal.

Sydney entered the match having lost six of their past seven games, but they dominated GWS from the outset.

Swans midfielder Luke Parker battled hard for 29 disposals and five clearances, while Nick Blakey (18 disposals, two goals) played his best game.

Jake Lloyd, Dane Rampe, James Rowbottom and Jordan Dawson were also crucial in the win.

Star Giants midfielder Josh Kelly tallied 31 disposals and eight clearances but he lacked support.

The Giants were clearly off the ball in the opening term as Sydney won the clearances 16-6 and disposals 101-54.

The Swans capitalised to kick three goals to nil, with Dawson booting two of them.

The Giants could only manage a single behind from their 11 inside-50s and nine of their players had one possession or less.

GWS kicked their first goal of the match at the 12-minute mark of the second quarter when Jeremy Cameron received a free kick for holding.

But the theme of their woeful delivery into attack continued with Sydney’s defenders able to pick off their kicks with ease.

The Giants’ woes continued in the second half as Sydney pulled away to break a three-game derby losing streak.