The fight starts on the sideline after injured Marist prop Travis Church appears to yell at Hautapu players on the field. A second spectator, Romana Graham senior, appears to take exception to this and is seen approaching Church.
The two grab each other then a man, believed to be a relative of Church, jogs towards them and clearly strikes Graham senior from behind to the right side of his head.
From there, spectators and players leave the field knocking over the hoardings on the way and escalate the brawl. Players from both teams are clearly seen punching a mixture of rival players and spectators.
The whole ugly scene lasts about a minute.
Towards the end of the video, a Marist prop who had earlier been sent off is seen entering the fray with a piece of wood.
The fallout from the brawl resulted in Hautapu's Waikato representative lock Romana Graham, who raced off the field to help his father, Romana senior, in the fight being banned along with his father. Hautapu team-mate Tau Moeke and Church were also suspended.
look at the people behind the pitch on the sideline.