Fremantle have held off a barnstorming North Melbourne to secure a six-point win in a thrilling contest at Optus Stadium on Saturday night.

Playing as the away team, the Dockers looked on track for a comfortable win when they lead by 22 points at the final change in wet and wild conditions.

But the Kangaroos had other ideas, kicking the next four goals to draw level and set up a thrilling finale.

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Fremantle ruck Luke Jackson put his side again with a clever snap, but there looked to be another final twist when the Roos surged forward late.

Harry Sheezel kicked forward and had three Roos teammates in the area, but key forward Josh Treacy found himself in the unusual position on the last line of defence and held on to take the match-saving mark

Had Treacy spilled it, the Roos would have almost certainly pounced and kicked a goal.

The forward then kicked it out on the full, but the Dockers were able to negotiate the Roos’ foray forward as the siren went.

“JT took an unbelievable mark at the end,” Patrick Voss told Fox Footy after the match.

The 10.13 (73) to 10.7 (67) win was Fremantle’s fourth victory on the trot, and improved their record to 8-5 ahead of home games against Essendon and St Kilda.

Fremantle forward Sam Switkowski looks set for a stint on the sidelines after injuring his hamstring in the second half.

Dockers forward Patrick Voss was critical in the victory with three first-half goals, while Sheezel was big for North Melbourne with 32 disposals and a goal.

Nick Larkey kicked three goals for North Melbourne, including two in the frenetic final quarter, while Luke Parker scored two majors.

A crowd of 31,408 attended the match, which was technically a Kangaroos home gave after they sold it to WA as part of a six-game deal across the next three years.

Fremantle entered the match wanting to shake off the “bye bogey”, having lost their past three matches following a bye.

The early signs weren’t good.

Luke Davies-Uniacke tallied 14 disposals, four clearances and a goal in a dominant opening quarter to give North Melbourne a surprise two-point lead at the first break.

Fremantle were wayward with 2.5, but Shai Bolton did at least provide a huge highlight when he danced and weaved through several opponents in a tight space before unleashing a 49-metre goal.

Davies-Uniacke’s determined rundown chase on Jordan Clark helped gift Larkey a goal as Fremantle’s frustrations grew.

Larkey was unlucky not to be awarded a free kick from point-blank range later in the term when he laid a successful tackle on Bailey Banfield, who simply dropped the ball over the goal line.

The non-call proved defining, with Fremantle producing a devastating four-goal burst in the wet just minutes later.

The Dockers kicked three of those goals in the space of 46 seconds of actual playing time, with the fourth coming 75 seconds later as North Melbourne’s spirit was broken.

Voss kicked two of those goals and handed off a third as Fremantle shot out to a 21-point lead by halftime.

The Kangaroos went into the break leading the inside-50 count 33-24, but Fremantle’s efficiency when they went forward was the big difference.

Fremantle supersub Nat Fyfe received a huge cheer when he ran on to the field in the dying minutes of the third term, and Caleb Serong’s goal a short time later gave the Dockers a 28-point lead.

But it was the Kangaroos who dominated the match from that point on, with their frenetic tackling and desperation almost getting them over the line.

- With AAP