PABC DYNAMITE clinched the Port Augusta Eightball Association Division 1 Premiership, defeating Flinders Sharks 8-3.
Dynamite finished the minor rounds in fourth position, but were in red-hot finals form, knocking off all the top three sides.
It was a disappointing scoreline for Sharks who were the first team through to the Grand Final, but Dynamite proved to be the far better team on the night.
Dynamite led 3-2 after the first set, then dominated the second by four frames to one.
A win by Rob Duke in the first frame of the last set was enough to secure Grand Final glory for Dynamite.
All five players used by the champions contributed to their success, with Clay Weidenbach, Brenton Schulz and Duke all winning two frames, while Andy Ripley and Rob Genahl won one each.
For Sharks, Brodie Grantham and James Little each won one frame from two, with Tim Martlew recording one from three.
This match proved to be a win for Whyalla over Port Augusta, as the majority of the players for Dynamite travelled from Whyalla to play each week.
Earlier in the week, Dynamite secured their place in the final by claiming a narrow 8-6 win over minor premiers PABC Shooters.
Dynamite staged a great fight-back to recover from a 1-4 first set deficit, levelling the scores at 5-5 after the second set. Dynamite won three of the next four frames to wrap up the win.
Clay Weidenbach showed his class by winning his three frames, while Rob Duke (two from three), Rob Genahl (one from two), Andy Ripley (one from three) and Brenton Schulz (one from three) all chipped in.
After such a promising start, Shooters would be disappointed to have been bundled out of premiership contention.
Their best contributors in this match were Ian Long and John Coulter, who both won two from three frames.
Straight Outta Progress went into the Grand Final against Flinders Ferals as the underdogs, but proved once again that there is no such thing as a certainty in any sport.
Progress got off to a flier, leading 4-1 after the first set. They continued their dominance in the second set, taking a 7-3 advantage into the final set. It took them three more frames before claiming premiership honours.
Star of the night was Progress Captain Joseph Langford, who won his three frames, while Jaak McKerlie continued his good finals form, winning both of his frames.
Jamie Wilkin (two from three) and Will Tucker (one from three) also contributed to the victory.
Ferals, who were going for three consecutive premierships, were unable to recover from their poor start, despite the form of Brett Irvine, who won two of his three frames.
After finishing third in the minor standings, Progress earned their spot in the final with a nail-biting 8-7 win over the Sky Tavern Honeyants in the preliminary final.
After finishing the minor rounds on equal points and percentage with Flinders Ferals, the Honeyants would be extremely disappointed to have missed out on a Grand Final berth.
Progress started strongly, leading four frames to one after the first set and extending that lead to 6-4 going into the final set.
Honeyants were able to level the scores at 7-7, but a win to Jaak McKerlie in a nail-biting last frame gave victory to Progress.
For the winners, Joseph Langford, Will Tucker and McKerlie all won two out of three frames, with Jamie Wilkin and Jake Martlew winning one each.
For Honeyants, Daniel Quigley won two from two and Layton Paige secured two wins from three.