Lake Illawarra are the new leaders and Oak Flats have slipped from first to fourth as four of the top five sides meet one another in a vital round 12 today.
Second-placed Albion Park bounced back from a shock first innings loss to trounce The Rail outright last Saturday but will need to be more consistent against Kookas (third) at Oakleigh Park.
Kookas were pushed hard by Kiama for first innings points in round 11 before going within one wicket of claiming an outright victory.
Kookas have been the quiet achievers this season, while Albion Park's best form is as good as any club.
Lake Illawarra have been in tremendous form and host Shellharbour at Howard Fowles Oval.
The Lakers beat Gerringong-Jamberoo outright to claim top spot, while Shellharbour bounced back from a couple of indifferent performances to beat Oak Flats.
Lakers opener Kerrod White is the competition's top batsman, while Shellharbour skipper Ben Mitchell is the leading wicket-taker, with 43 scalps at an average of eight.
Oak Flats will be chasing outright points against The Rail at Croome Cricket Oval.
Oak Flats slipped from first to fourth with the loss to Shellharbour and while their batting has been solid, they have struggled to bowl teams out.
Finally, Kiama and Gerringong-Jamberoo will fancy their hopes of victory at Cavalier Park.
Both have been inconsistent, particularly with the bat, but have also pushed some of the top sides.
Ladder: Lake Illawarra 135; Albion Park 129; Kookas 128; Oak Flats 117; Shellharbour 112; Kiama 61; Gerringong-Jamberoo 59; The Rail 57.