South Australia's dismal season continued when it coughed up first-innings points to Western Australia in under a day in their Pura Cup clash at the WACA Ground.

The Redbacks, anchored at the foot of the Pura Cup ladder, chose to bat first on a grassy pitch after winning the toss but never recovered from losing early wickets and were dismissed for just 114 before tea.

In reply, WA overcame the early loss of makeshift opener David Bandy, who batted at the top of the order rather than Warriors captain Justin Langer, and cruised to 3-160 at stumps on the first day.

The Warriors claimed first-innings points in the final hour of play, with the match less than 78 overs old.

Chris Rogers was continuing his prolific season and was unbeaten on 54, with nightwatchman Aaron Heal yet to score.

A century beckoned for Langer, batting at No.3, but he skied Jason Gillespie to mid-on on 91 and was caught by Jason Borgas to end a 146-run stand with Rogers.

It took Langer just 67 balls to reach his half-century, with seven fours and a six straight down the ground off spinner Dan Cullen.

Rogers now has 853 runs at 94.7 this season as he continues to stake his claim for future Test selection.

The home side's untroubled batting was a far cry from the woes of the South Australian batsmen, with only Mark Cosgrove (32) offering any sustained resistance.

WA pace trio Ben Edmondson, Brett Dorey and Steve Magoffin claimed three wickets each, their efforts almost certain to set up an outright victory that will put the Warriors back in the hunt for the Pura Cup final.

South Australian openers Jason Borgas and Tom Plant put on 23 for the first wicket, but the Redbacks soon collapsed once the former was caught at first slip by Justin Langer from the bowling of Edmondson (3-48).

It wasn't long before the Redbacks were in deep trouble at 4-52.

Cosgrove and Ben Cameron added 36 for the fifth wicket, but the latter fell to Magoffin (3-18 from 13 overs) as the South Australians slumped from 4-88 to 7-89, ultimately losing their last six wickets for only 26 runs.

Captain Matthew Elliott made just 16, caught when he hooked Dorey (3-41) straight to square leg.

Cosgrove tried to hold the innings together, but was running out of partners and eventually skied an attempted pull and was caught by wicketkeeper Luke Ronchi from the bowling of Edmondson.

Edmondson bowled with excellent control and pace, continuing the purple patch of form that netted a career-best five-wicket haul in Wednesday's one-day match against the Redbacks.

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