Western Australia has routed Tasmania to claim first innings points in the first day of its Pura Cup match against the Tigers at Bellerive Oval.

The Warriors took less than three hours to dismiss the home side for 94 after earlier winning the toss and sending Tigers into bat.

The visitors finished the day 3-155, with not out batsmen Chris Rogers on 93 and Adam Voges on seven.

Tasmania haemorrhaged wickets in the first session, losing both opening batsmen to be 2-18, then the next three for a measly 46 runs.

A six-wicket haul from WA fast-medium bowler Ben Edmondson put paid to any hopes of a big tally and Tassie ultimately delivered its fourth-worst innings in a Pura Cup/Sheffield Shield match, only 18 runs ahead of its worst ever against NSW in 1991-92.

In contrast, Edmondson made a new career benchmark with his 6-28 topping his previous best figures of 5-90 against South Australia in 2003-04.

The 28-year-old bowler said he was "stoked" with his game after a slow season to date.

"Leading into the season I've been in the best form of my life but I hit a bit of a speedbump at the start of the season," he said.

"But (I was) still having faith and still feeling like the ball was coming out pretty well so I knew something was around the corner."

Only Michael Bevan (25), making his return to first-class cricket after a persistent hip flexor injury, broke the 20 mark for Tasmania before he caught an outside edge off Edmondson.

Right-hander Tim Paine (3) brought about his own demise, hitting his wicket with a careless one-handed swing after missing a ball off Steve Magoffin (4-50).

Tasmania returned from lunch at 5-64 and lost its final five wickets for 30 runs in less than 10 overs.

WA made a cautious start to its innings, openers Rogers and David Bandy (25) bringing up the 50 off 147 balls.

Rogers stroked a boundary through the covers in the 34th over to take WA to 1-96, claiming first innings points and bringing up his fifth 50 of the season.

Edmondson said the side planned to bat on Wednesday.

"Definitely, I think that's the plan," he said.

"Bat for as long as we can and try and do something similar in the second innings."

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