South Australia 0 for 18 trail Western Australia by 211 (Whiteman 45, Mennie 4-50, Sayers 3-41) by 193 runs
Seamer Chadd Sayers made a fruitful return to South Australia's Sheffield Shield XI to help roll Western Australia for 211 on the first day of their match at the Adelaide Oval.
Having opted to bat after captain Shaun Marsh won the toss, the Warriors were unable to make the most of what appeared to be decent scoring conditions in the face of disciplined Redbacks bowling.
Sayers had undergone ankle surgery during the winter, and was missing from both South Australia's Matador Cup squad and the team that lost to New South Wales in the opening Shield round.
But he wasted little time demonstrating his command of line and subtle movement, claiming the first three wickets of the WA innings to set SA on the path to a productive day.
Joe Mennie followed up with four wickets of his own, and it took a series of pesky lower-order partnerships featuring William Bosisto and Sam Whiteman to allow the Warriors to eke out a tally of 211.
Kelvin Smith and Mark Cosgrove then kept out the new ball in the hands of Jason Behrendorff and Michael Hogan in nine overs to the close, and will be hoping to build on their start on day two.