Sedgwick and Maiden Gully Marist clash in the Emu Valley Cricket Association match of the round.
The Rams have already put a handy gap on their rivals on the back of an outright win in round two and a victory in round three when every other match was washed out.
Maiden Gully Marist's weakness is its batting and Sedgwick's bowling attack provides the ultimate test for any EVCA batting line up.
In four innings so far this season the Rams have conceded scores of just 95, 41, 76 and 72.
Maiden Gully escaped with a draw last round after being bowled out for just 118 against Mandurang.
Spring Gully star Rhys Webb has the opportunity to score his third-straight century when the Crows host Axe Creek.
Webb is coming off scores of 151 against Cal Gully and 116 against West Bendigo.
Read more: BDCA and EVCA teams round four
The rain probably cost Emu Creek its first win of the season and now it faces a stern test at home on Saturday against Mandurang.
A loss would put Emu Creek, widely-regarded before the season as a potential grand finalist, two wins outside of the top four with a clash with Sedgwick looming next round.
In the remaining two games, Cal Gully should return to the winners' list when it hosts bottom side Marong, while West Bendigo and United do battle at Ken Wust Oval.
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