The Swans have gone down by 31 points against Fremantle, remaining a step behind their opposition throughout the duration of the match.
In a supreme defensive display, the Dockers restricted the Swans to just two goals on their way to the 7.8 (50) to 2.7 (19) win.
The win lifts Justin Longmuir's men up to 13th spot, six points behind eighth-placed Collingwood.
The Swans struggled to recapture the form that saw them destroy the Giants at the same venue last week, kicking just two goals for the match.
For an injury-depleted Sydney side, the positives were harder to find. Having kicked the game's first goal just four minutes into the contest, the visitors then went more than three full quarters without another major in a bruising defeat.
Young midfielder James Rowbottom (19 disposals, eight clearances) was one of the few shining lights for the Swans, but there was no hiding the dramatic fall from grace after the high of last week's thumping win over crosstown rivals the Giants.
Keep the Lizard in the middle
Nick Blakey has found his niche. Having struggled trying to fill the void of Lance Franklin, Sam Reid and Tom McCartin as Sydney's go-to key forward target earlier this season, the highly-rated Blakey has been shifted into more of an inside midfield role over the last fortnight. He backed up his 18-disposal, two-goal outing against the Giants last week with another 15 disposals, seven contested possessions, seven inside 50s and four clearances against the Dockers on Saturday night.
In that position, he was one of few shining lights in a dour night for a young Swans outfit. A big body at 195cm, but with an exceptional kicking ability, Blakey provides Sydney's midfield with a different type of midfield option. It's out of the centre where he therefore must stay in the future.
FREMANTLE 1.1 4.4 5.7 7.8 (50)
SYDNEY 1.2 1.4 1.4 2.7 (19)
BEST
Fremantle: Ryan, Brayshaw, Mundy, Taberner, Walters, Fyfe, Schulz
Sydney: Rowbottom, Lloyd, Dawson, Kennedy
GOALS
Fremantle: Taberner 2, Mundy, Cerra, Frederick, Lobb, Schulz
Sydney: McCartin, Wicks
INJURIES
Fremantle: Nil
Sydney: Nil
