Round 18 kicks off with a September preview as Fremantle hosts Sydney at Optus Stadium on Thursday night and this one has been circled on the calendar for weeks.

The Dockers arrive carrying their first blemish since Round 1, going down 109-88 to GWS in a shock result that snapped the club's record 14-match winning streak.

That defeat leaves Fremantle vulnerable to handing top spot straight back to the Swans, with just one win separating the two ladder leaders heading into Thursday night.

Adding to Freo's headache is a groin injury to Hayden Young, another frustrating setback for the star Docker as the club eyes off a serious tilt at the flag.

Sydney, on the other hand, are trending the right way again after a cruisy 90-55 demolition of the Bulldogs on Friday night, powered by a dominant opening term and six goals from a rampaging Charlie Curnow.

History suggests this will be tight regardless of the ladder gap; the Swans snuck home in both meetings last season, grinding out a 68-65 thriller in Round 2 before doing it again 94-83 in Round 17.

But these Dockers are a new club in 2026 and will be looking to inflict some pain on the Swans at home.

With both clubs boasting genuine premiership credentials, Thursday night in Perth shapes as one of the most important home-and-away fixtures of the season.

For the latest team news, analysis, and expert insights, check out our Fremantle Dockers vs Sydney Swans Round 18 prediction and preview below.

Fremantle Dockers vs Sydney Swans Prediction and Betting Tips

Head-To-Head Prediction

First versus second and this one shapes as an absolute cracker.

There are genuine questions swirling around Sydney's recent form, while Fremantle arrive off the back of just their second loss of the season.

The Dockers were overdue a stumble and although they were far from awful in Canberra against the Giants, they never really looked like winning.

Charlie Curnow's stocks keep rising, and he feasted again on an undermanned Western Bulldogs defence last week, while Errol Gulden now has a couple of games under his belt and looks set to become a genuine weapon on the wing and through the middle for the Swans.

His kicking is genuinely game-changing.

Brodie Grundy smashed Timmy English out of the ruck last week and now faces the most dynamic athlete in the sport in Luke Jackson, a clash that could go a long way to deciding this game.

So often it's four-on-three at ground level, as Jackson joins the hunt for the footy while the more immobile opposition ruckman is left in his athletic wake.

Freo's big three forwards, with Patrick Voss under an injury cloud at time of writing, will be desperate to bounce back and make the difference on home turf.

Should Voss miss out, don't be surprised to see Mason Cox thrown into the mix alongside Treacy and Amiss, or the Dockers could just as easily go small up forward.

Head-to-head prediction: Fremantle Dockers by 13 points.

First Goal Scorer Prediction

Charlie Curnow has gone from strength to strength this season and after booting six against the Dogs last week, he now sits second in the Coleman Medal tally.

The Swans spearhead has been kicking goal for fun lately and is the tip of the spear in attack for the Bloods.

Expect Sydney to look Charlie’s way early doors as they try to set the tone in Perth.

Betting tip: Charlie Curnow.

Most Disposals Prediction

Isaac Heeney remains the Swans' chief distributor, averaging an impressive 27.43 disposals so far in 2026.

Whether he's roaming through the midfield or drifting forward to influence around goal, Heeney's fingerprints are all over Sydney's ball movement.

With this shaping as a contested, midfield-heavy affair, expect the touches to keep flowing Heeney’s way.

Betting tip: Isaac Heeney.

*Odds are subject to change.

Fremantle Dockers vs Sydney Swans Predicted Teams

Fremantle Dockers Predicted Team List

FB: Heath Chapman, Alex Pearce, Brennan Cox

HB: Karl Worner, Luke Ryan, Jordan Clark

C: Michael Frederick, Andrew Brayshaw, Nathan O'Driscoll

HF: Sam Switkowski, Judd McVee, Murphy Reid

FF: Josh Treacy, Jye Amiss, Patrick Voss

FOLL: Luke Jackson, Caleb Serong, Shai Bolton

I/C: Matthew Johnson, Neil Erasmus, Isaiah Dudley, Sean Darcy

Sydney Swans Predicted Team List

FB: Callum Mills, William Edwards, Tom McCartin

HB: Dane Rampe, Nick Blakey, Harry Cunningham

C: Matt Roberts, Errol Gulden, Jai Serong

HF: James Jordon, Jake Lloyd, James Rowbottom

FF: Caiden Cleary, Charlie Curnow, Hayden McLean

FOLL: Brodie Grundy, Isaac Heeney, Chad Warner

I/C: Harry Kyle, Joel Hamling, Tom Hanily, Angus Sheldrick, Corey Warner

Fremantle Dockers vs Sydney Swans Match Details

Date: Thursday, July 9, 2026.

First Bounce: 8:10pm AEST

Location: Optus Stadium, Perth

How to Watch: Fox Footy/Kayo Sports, Channel 7