On a lively, green field in Perth, the three-time reigning champions reached 52-2 before being bowled out for 53 amid a rush of wickets.
The batting order numbers five through ten were all out for ducks, and the lone extra run came via a wide.
Fast bowler Billy Stanlake took 3-12, while Tasmanian seamer Beau Webster took 6-17. Tasmania won by seven wickets after chasing their goal in 8.3 overs.
The fact that all 11 members of Western Australia’s XI were Australia internationals added to the collapse’s remarkableness.
Only South Australia’s 51 versus Tasmania was lower than that, making it the second-lowest score in the tournament’s history.
