Murray South East win 2017 SA Country Championships | VIDEO

Murray South East have achieved something unlike any other team before them: winning an SA Country Championship on their home deck.

The Saints dominated Sunday’s final from the opening bounce against Southern Districts at Johnstone Park, Murray Bridge.

The ball rarely left their attacking 50 as they kicked 4.5 to 1.1 in the opening quater.

Captain Brian Fenton endured a hard knock, but remained on the field as Murray South East extended their lead to 30 points at the main break, 7.8 to 3.2.

The one-way traffic continued in the third, as the home side added three goals and as many behinds to the Blues' two points.

The runners-up gained a veneer of respectability by more than doubling their score in the final term, but Murray South East still ran over the top of them by a margin of 11.17 to 6.7.

This is a third championship for the home side, who defended their 2016 title and added to the one they took home in 2014.

Southern Districts had prevailed when the two sides matched up in the 2015 final.

Murray South East captain Brian Fenton, of Meningie, said it had been a super weekend of football.

"The boys came together really well," he said.

"We adapted well as a team and that's what got us over the line.

"Especially when our zones are so far apart, we only get a light run (beforehand) ... so we try to eat together, hang around together, learn each other's names and find out how we play footy."

Coach Adam "Hoggett" Merrett, of Penola, had the same view.

"Probably the difference between us and the other sides is how well they play together and how unselfish they were," he said.

"Set plays, everyone did what they were told, there were no individuals out there. Everyone played for one reason and we got the result."

Core players such as Fenton, Myles Warmington (Meningie), Brett O'Neil (South Gambier) and ex-AFLer Brodie Martin (Meningie) had helped the side settle, he said, but the 12 first-timers in black, white and red had also helped them get over the line.

"We went with a more youthful side, a running side, and it paid dividends," he said.

It was special for the players to go back-to-back and to win at home, Fenton said, but more memorable still for the officials and volunteers who had spent years working behind the scenes.

The players honoured regional director Scott Duncan, whose uncle died in the United States shortly before the championships, by wearing black armbands throughout the weekend.

But the emotion bellowing out of the Imperial changerooms as they sang "When the Saints Go Marching In" after the match was all positive.

The KNTFL was represented by Penola’s Scott Merrett, Mundulla’s Jake McGrice and Tim McIntyre, and Border Districts’ Cam Sandercock.