Fremantle's 31-point victory against Sydney at Optus Stadium on Saturday night was inspired by veteran midfielder David Mundy, who won 22 disposals and kicked a goal in a dominant contested display alongside a host of younger teammates including Andrew Brayshaw, Adam Cerra and Caleb Serong.

While Luke Ryan won the Goodes-O'Loughlin Medal with eight votes at the best on ground in the clash, David Mundy finished second in the polling with five.

In his post-match media conference, senior coach Justin Longmuir said Fremantle would look to extend the 35-year-old club legend's career by another year, hoping Mundy will agree to play into an 18th season in 2021.

"We'll keep the dialogue open," Fremantle coach Justin Longmuir said.

"Me and (football boss) Peter Bell have had a chat to him. At the moment, we're all keen to push ahead with that.

"We've left it to the end of the year on purpose, because of his age and where he sits. But we're just really happy with his form and really rapt with what he's teaching our younger players.

"He's a calm head during the week and on game day, so he's a real benefit for us at the moment."

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