Dapto Dandaloo Fury and Port Kembla face the prospect of playing a double-header next weekend after their match was postponed on Sunday.
Heavy rain ensured the only match on Sunday was washed out, which will help give Bulli a slight reprieve at the top of the competition.
The Fury are four-points behind the ladder-leaders after the Northern Suburbs club beat Tarrawanna 2-1 on Saturday.
Dapto Dandaloo had bridged the gap to just a single point last weekend but will have to wait an extra week to renew their push for the League Championship crown.
"It is what it is, so we will just have to deal with it. There is no two ways about it, it is going to be difficult backing up," Fury coach Norm Boardman said. "We have got Woonona, which is going to be a difficult game but at least you know if it rains they are going to be on because their ground is pretty sand-based."
The Fury head to Ocean Park to meet the stuttering Sharks on Saturday.
A loss would give Bulli a huge advantage at the top with two matches remaining.
While he wasn't planning on dropping the match, Boardman did have a plan in mind if the Fury fell in Saturday's test.
"It might give us an opportunity to have a few different players on Sunday if we don't get the result we need," he said.
"That could turn into a little bit of a positive if things don't go our way on the Saturday."
The catch-up match will have a similarly important bearing for Port Kembla, who are battling to finish in the league's top-five.