The under-18s match between Newport and Sunshine yesterday descended into chaos at Chirnside Park in Werribee, with footage showing punches being thrown by spectators and players.
Newport had just won by 13 points when the violence began.
It remains unclear what triggered the scuffle, however it all ended before police arrived.
It is understood a child was knocked over in the brawl.
Nobody was seriously injured.
Police said it is investigating the incident, along with the Western Football Netball League (WFNL).
The WFNL said it would not comment further but described the scuffle as “significant”.