Port Pirie enjoyed a triumph over top-of-the-ladder Laura in Saturday's Division One competition.
Stephen Lynch's rink top scored with 33 shots as Port Pirie powered its way to win by 11 shots, 94 to 83.
Second-placed Jamestown triumphed over Crystal Brook,104 shots to 96 while BHAS and Orroroo also had wins.
A nail-biting clash saw Gladstone and Melrose draw.
While Laura continues to hold top spot, Jamestown, Crystal Brook and Port Pirie are close behind and eager to claim the 'number one' spot.
In Division Two, top team Peterborough proved too strong for Laura. Peterborough won 113 shots to 88.
Port Pirie had a strong showing as it stormed its way to victory over Gladstone, 139 shots to 57 shots.
Gulnare had a strong win in Division Three, defeating Crystal Brook Red by 44 shots.
Melrose defeated Georgetown by 22 shots in Division Four.