Hosts sit on top of the 40 & Over Men division with another win over Queensland to ensure their position at the top of the ladder heading into the final round of matches on Thursday 25 May.
New South Wales maintained top spot on the table, heading into the evening matches.
The ladder-leaders thumped North Queensland 119 to 69, with Jason Morris contributing 26 off his own bat, and Daniel Taylor collecting four wickets to go with 20 runs.
Queensland comfortably accounted for Victoria to post win number six, while Western Australia posted their first win for the tournament, against ACT.
Two wins from two matches sees the ACT at the peak of the mountain.
A comfortable win in the afternoon, 106 to 47, against second-placed Queensland made sure of that, with a final batting pair of 39 between Jason Hays and Nathan Rennie important in the win.
North Queensland beat New South Wales by just one run, while Queensland also recorded a win against New South Wales.
Western Australia has stormed into contention - and second spot - with two wins from their two games.
One came against ladder-leader Queensland, while the other came against North Queensland - a four-skin, 60-run win, in which Trevor Hart played a key role with four wickets.
In the other two matches, Queensland and North Queensland both had wins against New South Wales, with WA, NSW and North Queensland now all tied on three wins from seven games.
Queensland remain unbeaten after recording a comfortable win against Victoria, by 38 runs, and a two-run thriller against second-placed New South Wales.
ACT also posted two wins to sit comfortably in third place, while South Australia overcame Victoria in a one-run game.
Simon Morris and Robert Keates held their nerve with a wicket-less 38-run partnership to chase down Victoria’s 117 in the final over.
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