A FREMANTLE fan has pleaded guilty to hitting a woman in the throat after being asked to tone down his language during this year's preliminary final against Hawthorn at Domain Stadium.

Cody Luke Yarran, 24, struck the mother in front of her children during Fremantle's loss to the Hawks on September 25.

He appeared in Perth Magistrates Court on Monday and formally entered pleas of guilty to five charges, including assault and disorderly behaviour.

Yarran will be sentenced on November 30.

The incident was part of a horror night of crowd behaviour in Perth, with Hawks players Isaac Smith and Luke Breust also involved in close calls with over-zealous fans.

Yarran's incident was captured on video and drew the ire of both the AFL and the public.

He is not a member of the Dockers, but Perth Stadium management confirmed at the time Yarran would be banned for life from attending any events at the stadium.

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AFL chief executive Gillon McLachlan labeled the violence unacceptable.

"I apologise on behalf of our game to our supporters," McLachlan said.

"It was something that cannot be condoned in AFL football. 

"Our supporters need to feel safe. Children need to feel safe. Women need to feel safe at the football. That behaviour cannot be tolerated in any form."