It was a three-peat for Brinkworth-Spalding-Redhill's B Grade on Saturday.
The Tigers got the better of Blyth-Snowtown at Burra, downing the Cats 5.3 (33) to 7.12 (54) to bring home their third flag in as many years.
B.S.R's Alex Smart was named best on ground in the Grand Final win.
Blyth-Snowtown made a slow start to the contest, only managing 14 points through three out of the four quarters of the decider.
The Cats managed to kick into gear in the fourth quarter to reduce the deficit, but it was not enough as B.S.R held on for the win in the wet.
Ben Pilkington and Sam Cousins had two goals each for the Premiers, while Jake Slade, Josiah Clifford and Smart all hit the scoreboard.
Nick Billing was best for Blyth-Snowtown down back, while Kiel Kennett and Lachlan Summers both had a pair of majors.