Spectators became heated in the final moments of the Beechwood versus South West Rocks Marlins game in the Hastings League.
Beechwood Shamrocks are continuing their almost unbroken run with a 30-12 victory over the Marlins on July 17, despite a distraction involving spectators late in the game.
The Shamrocks have so far only suffered a loss to the Long Flat Dragons in the Bain Cup.
President Geoff Connor said the game was played in good spirits but an altercation occurred when passionate fans were too close to the field.
"The Beechwood versus Marlins game was a pretty close game until the last 10 to 15 minutes," he said.
"Beechwood have good line speed, while the Marlins may not have been completely fit.
"Both crowds were at fault in the altercation. There was only one side of the field to sit and really the crowds were a bit too close to the field, they were too close to the action.
"It did get a bit heated, we don't see that at our level usually."
Mr Connor said spectators aren't allowed on the field during play and it will be addressed.
In the other Hastings League matches, Comboyne defeated Harrington, 30-26, while Kendall defeated Lake Cathie 58-6 and Lower Macleay defeated Laurieton Stingrays, 34-20. Long Flat had the bye.
Mr Connor said strong winds plagued most games over the weekend.
"Harrington are improving, with a closer game against Comboyne. ," he said.
"It was a big day of footy for Lake Cathie versus Kendall. The footy started at noon and went all the way until 4pm, all of the girls played as well."
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