South Australia survived a tense finish against Tasmania to claim an important win at Karen Rolton Oval, with key contributions across the board with both bat and ball.
After being sent in to bat, South Australia got off to a flying start through Jake Fraser-McGurk, who blasted 88 from just 47 balls, including six sixes.
The hard-hitting opener combined with Mackenzie Harvey for a 120-run opening stand before Jake Weatherald continued the momentum against his former side, smashing 92 in his first home match back in South Australian colours.
Matt Gilkes then put the finishing touches on the innings, finishing unbeaten on 97 from 65 deliveries to help South Australia post an imposing 383 from its 50 overs.
With the ball, Campbell Thompson removed the dangerous Mitch Owen early, before Wes Agar struck with the first ball of his spell to dismiss Beau Webster.
Tasmania fought back through a 110-run partnership, but stand-in skipper Ben Manenti broke the stand by dismissing Tim Ward before producing an outstanding caught and bowled to remove Jake Doran.
The visitors remained in the hunt thanks to captain Jordan Silk's superb 142, but Henry Thornton produced a crucial breakthrough when he removed Silk at a key stage of the chase.
Thornton then put the nail in the coffin, claiming another wicket as South Australia held its nerve to secure a hard-fought win.
Manenti led the attack with 2-54 from 10 overs as South Australia held its nerve to secure victory despite some late resistance from Tasmania.
South Australia will take on Victoria at Junction Oval on October 12.