Nhill will host Kiata and Winiam takes on Jeparit in two-day matches begininning tomorrow, while reigning premier Rainbow has the bye.

The season is on the line for both Winiam and Jeparit, with the winner earning a finals berth and the loser eliminated.

Jeparit skipper Trevor James said his side was yet to play this year and was eager to play finals.

"We haven't played cricket this year yet with the heat stoppages and all that, and we had a bye in the first round of the year," he said.

"For us it's do-or-die and it's a bit like that for Winiam as well.

"If it's a draw then they'll probably get through on percentage so we need a win to make finals."

James said Jeparit would field a near full-strength side tomorrow.

Bowler Tom Crowhurst will be the only notable exclusion with study commitments in Adelaide.

James said Jeparit's bowling attack was still well-placed to cover for Crowhurst.

"We've got a pretty decent attack so it's going to come down to the old thing of putting runs on the board and making sure we don't let them get those runs," he said.

"Brad Clark can do it with the bat and with the ball so if we can get his wicket early and then survive his bowling it will be good."

James said Ben Marra would also be a danger man on the quick, dry Winiam oval.

He predicted a high-scoring encounter with plenty of boundaries.

James said Winiam would also host a Pink Stumps Day in support of the McGrath Foundation next Saturday.

He said the day would feature old West Wimmera legends in an 11-over-a-side format with each player bowling one over.

He said a barbecue and presentation along with a raffle of the Pink Stumps items would follow the match, with proceeds going towards breast cancer research.

In Saturday's other West Wimmera match, Nhill and Kiata will go head-to-head having already secured finals berths.

While neither team can be eliminated, the outcome will still shape the ladder.

A win could see Nhill reclaim top spot from Rainbow and earn the minor premiership.

Should Kiata win, it would finish second and gain a home final in a rematch against Nhill.