Jake Weatherald and Cameron Bancroft missed their chance to apply pressure for Ashes selection as 14 wickets fell.
Liam Haskett was the surprise spark for Western Australia, finishing day one on top in their Sheffield Shield clash against Tasmania in Hobart.
Ashes batting contender Jake Weatherald (18) missed a chance to push his case for a Test debut, before his team unravelled when third-change WA quick Haskett was introduced.
The paceman took 3-26 in 10 overs, removing opener Nivethan Radhakrishnan (36) to start the collapse.
The hosts crumbled from 3-87 to be all out for 171 at Bellerive Oval.
A bright, unbeaten 41 from Jake Doran that included three sixes salvaged things somewhat in an otherwise horror middle session for the Tigers.
Author's summary: Western Australia leads Tasmania after day one.