tasmania $55 for 3 beats Western Australia 53 (Webster 6-17, Stanlake 3-12) by 7 wickets.
Western Australia have lost eight for one run due to a long-running batting collapse that has wreaked havoc on their One-Day Cup defence.
Tasmania chased down the paltry victory target in just 8.3 overs to secure a seven-wicket victory and a vital bonus point.
WA’s bid for a fourth successive title has now come to a halt. WA are 1-3 and will need to beat Victoria, South Australia and Queensland in their remaining three games and rely on other results to secure a top-two spot and a place in the final on March 1. .
This meant WA were all out, from 52 for 2, to 53 for 2, with players batting at numbers 5, 6, 7, 8, 9, 10 and 11 not scoring a single run.
The out-of-form Cameron Bancroft was the first to collapse when he was caught lbw by Webster. Ashton Turner also threw three pitches to Webster later, and Josh Inglis then threw one to Stanlake Pearler.
Cooper Connolly, Hilton Cartwright, Ashton Agar, Jhye Richardson and Joel Paris all posted ducks as WA’s innings collapsed.
Opener D’Arcy Short top-scored with 22 points in a pitiful scoreboard for the three-time defending champions. WA fell short of their previous lowest score of 59 against Victoria at the MCG in 1969.
Webster was the hero for Tasmania, claiming an early scalp from Short before he began a collapse in a career-best display. Stanlake was also very effective, removing Inglis during the highlight of the innings.
In response to WA’s embarrassing total, Tasmania were unbeaten on 27 after three overs, with opener Mitchell Owen producing a series of powerful heaves.
Tasmania lost 1-3 as Caleb Jewell, Jordan Silk and Owen went down in quick succession, but Matthew Wade guided them home.
The result gave Tasmania their first win of the season after losing and drawing their first two games.
