Needing to secure a bonus point win to advance to Sunday’s Final against New South Wales at Bankstown Oval, WA ripped through a brittle Tigers batting group, bowling the opposition out for 148 in 24.5 overs.

The double-bonus point victory is the second on the trot for an immense WA team that has hit an unbelievable run of form over the past two fixtures.

Sent into bat, WA lost two quick wickets before a 99-run stand between skipper Mitch Marsh (63) and Sam Whiteman (59) steadied the innings and put the home side on the front foot.

Marsh was brutal with the blade, he smashed eight boundaries in his 48-ball stay at the crease.

Wicketkeeper Josh Inglis continued his fine season with a punching knock of 60, while some lower order hitting pushed the WA total to 307.

Needing to restrict Tasmania to 245 or less to make the final, the defending champions wasted no time going to work with the new ball.

Jason Behrendorff was sensational in his return for WA, he dismissed Tasmania’s dangerous top three to finish with figures of 3-33.

From there Tasmania unravelled and struggled to build a partnership of substance, eventually being bowled out with half of the allotted overs left in the game.

WA will fly to Sydney tomorrow morning to prepare for their third One-Day Final in four years.