CABRAMATTA police will lace up their boots and sport different shades of blue on October 14.
The Cabramatta Dragons will take on the Green Valley Cows at the annual Mark Dooley Charity Day of rugby league at Campbelltown Showground.
And there's fierce rivalry between the two commands, said Cabramatta assistant coach, Sergeant Larry Barrington.
"The history of our rivalry dates back to the 1970s and that's in all kinds of sports," he said.
The Dragons have brought home the trophy in the past two years, which is why the Cows are determined to win.
Said Green Valley's Ron Sherrington: "This is one of the highlights of the year for me.
"We've been training real hard and we're looking to win and hang the trophy up in the station this year."
The day was established in 2006 after Campbelltown officer Mark Dooley died from cancer.
All proceeds will go to Police Legacy which provides financial assistance to families of fallen officers.
The public can cheer on their local police for a gold-coin donation.
There will be jumping castles, face painting, food and drinks, silent auctions and raffles.
Gates open at 10am.
■Liverpool vs Fairfield 11am;
■Cabramatta vs Green Valley 1pm;
■Campbelltown vs Macquarie Fields 3pm.