Star forward Chloe Molloy has steered Sydney to a 19-point victory over Collingwood, edging the Swans one step closer to their first finals appearance.
Withstanding a late-term surge from the Magpies, the hosts launched themselves into the top eight for the first time in their AFLW existence with a 9.4 (58) to 5.9 (39) victory at Henson Park on Sunday.
"I actually turned to the other coaches and said, 'I think we're on today'," Swans coach Scott Gowans said after the match.
"I never felt like we lost more than about a five-minute block in the game, which is really a big step for us against a top-eight side.
"It's pretty special, isn't it? To reflect back to where we were last year, today keeps us alive."
Fresh off a career-best performance against the Western Bulldogs, Sydney co-captain Chloe Molloy (three goals, eight score involvements) put on another electric performance in her first match against her former side.
In-form Collingwood ruck Sabrina Frederick also enjoyed one of her career-best performances, dominating with 39 hit-outs and two goals.
With the Pies eager to set the tone early, Frederick and Nell Morris-Dalton exploded from the gates to kick two majors in the opening three minutes.
The ever-prolific Rebecca Privitelli (two goals) dribbled one through to turn the tables for the Swans, kickstarting a chain of three unanswered goals.
It was Molloy's turn to hit the scoreboard in the second term, but not without controversy.
The off-season recruit played on from a mark just outside the goal square, kicking the belly of the ball to seemingly launch it across the face.
Without a score review system in the women's competition, Sydney were granted the crucial major to build an 18-point lead at halftime.
Collingwood surged back to life in the third quarter with goals from Grace Campbell and Frederick, but inaccuracy cost them the lead.
Backing up a major from the tightest of angles in the right pocket, Sofia Hurley (two goals) put boot to ball on the run to give the Swans a 12-point cushion heading to the final term.
Another Molloy goal sealed the win, sending the 5722-strong crowd into raptures.
Having fumbled the chance to win their club the $1 million McClelland Trophy for the combined champion AFL/AFLW outfit, Collingwood will need to win their last match of the season against Richmond, whilst relying on other results to go their way, to make their fifth consecutive finals series.
The Pies could again be without key defender Ruby Schleicher, who was taken off the field in the fourth quarter with a suspected knee injury.
Schleicher has only played two games this season, having been sidelined by a foot injury sustained in the off-season.