Brawl breaks out during Sydney derby, fans banned

A handful of A-League fans were kicked out and then banned from Commbank Stadium in Parramatta after a brawl at the Sydney derby on Saturday night.

Western Sydney Wanderers fans were pinned to the ground by authorities during their match against Sydney FC before play even finished for the night.

Sydney went on to defeat the Wanderers 4-1 in a miserable night for their club and supporter base.

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An hour prior to kick off, Wanderers fans gathered at Prince Alfred Park in Parramatta, carrying a sign that read "red and black block" (RBB), as part of a planned march towards the stadium.

Once Wanderers fans hit the stands, a 37-year-old man was asked by security to leave, allegedly due to holding up an unauthorised banner.

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The RBB left the ground with the man in solidarity, leaving a hole in the mega crowd.

During their mass exodus, the brawl broke out as chants carried into the stadium carpark.

Fourteen patrons were booted, with six of those banned from Commbank Stadium for up to 12 months.

Another supporter was issued an infringement for their behaviour. It is still unclear how the brawls started.

Wanderers coach Marko Rudan said the absence of his club's loudest and proudest supporters was felt by the side on the pitch as they struggled to stop Sydney's onslaught.

"Not having them singing and cheering the players … we all realised they (the fans) weren't there," Rudan said.

For Sydney, Rhyan Grant and Robert Mak scored a goal each, while Fabio Gomes starred with two to his name.

The Wanderers only goal scorer was Jake Girdwood-Reich in the 72nd minute.