St Marys Saints' under-19s team powered home in the second half to defeat Brothers Junior Rugby League Club 24-14 in an elimination final.
After finishing the regular season third on the ladder, the Saints travelled to Blacktown Workers and had a first-half scare before righting the ship to pull away in the final minutes.
Saints player Billy Saunby said the slow start was a worry but getting into their own patterns in the second half made the difference.
"We got off to a slower start than we usually would but we gelled really well in the second half — which was good to see," he said.
"We weren't doing anything too different but probably started sticking to our game plan a bit more."
Brothers scored in the fifth and eighth minutes and again not long after to lead 14-0.
That start gave the Saints supporters on the hill some nerves before a late try pulled it back to 14-4 at the break.
In the second half Saints controlled possession to be on top in the match.
Thomson Luamath Tuigamala bust down the middle to set up a try under the posts.
Jahmarley Fuimaono crossed in the corner to level at 14-14.
Brothers didn't wilt.
The tough, physical match was still in the balance until an 80-metre burst by Fuimaono went through six or seven tacklers and ended in the opposite corner with a try.
The conversion pushed the Saints out to a six-point lead with just four minutes left.
With just two minutes on the clock Chris Vaegaau crossed the whitewash to put the match beyond doubt.
Saunby singled out Luamath Tuigamala as one of the Saints' best on the day.
"Thomson was big for us," Saunby said.
"He showed up whenever the team needed him and did the hard yards in the middle."