Chasing 449 runs to score an outright victory, Tasmania went for broke but the wickets tumbled and they only just managed to hang on for a draw. At stumps, Tasmania were 396 for nine after Western Australia had turned the tables in the last hour, claiming six wickets for just 55 runs.
The Tasmanians had appeared well placed to pull off a dramatic win when they padded up for the last session at 248 for two, needing 201 off a minimum 32 overs to take maximum points.
But an early casualty was their heroic left-handed opener Scott Mason who was stumped by Ryan Campbell off part-time off-spinner Marcus North for 126.
Mason, whose second-wicket stand with all-rounder Shane Watson -- who made 92 -- yielded 189 runs, surged to his first century of the season and the sixth of the match off 136 balls with 13 fours.
Michael Di Venuto teamed up with former West Australian Michael Dighton to add 83 runs before Di Venuto was trapped leg-before by all-rounder Kade Harvey for 50. Harvey went on to claim Dighton for 62 and Dan Marsh for 20 as Tasmania's hopes evaporated.
Western Australia had declared its second innings at 270 for six off 57 overs just 13 minutes into the first session to set Tasmania a formidable target.
Tasmania faces a daunting task ahead