The Collie Eagles were left stunned following their shock loss to the Eaton Boomers at Glen Huon Reserve.
Firing on all cylinders, Eaton kicked three goals to one in the opening quarter.
In front by 14 at half time, the Boomers controlled the contest and kept Collie scoreless in the third term.
Failing to convert their opportunities, the Eagles lost, 3.5 (23) to 6.5 (41), in Round 10.
Meg Purton (two goals) and Brooklyn Nelson (one) were solid around the ground, while Boomers Kellie Austin, Trinity Brown, Rani Mcmillan, and Nasima Teka claimed one goal each.
Harvey-Brunswick-Leschenault clashed with Busselton on a wet and wild Saturday afternoon at Brunswick Oval.
Following a tight first half, the Lions moved ahead by 11 at three quarter time.
Conceding one goal in the final term, HBL held on to celebrate a 2.6 (18) to 2.2 (14) win.
The Harvey Bulls remain just one win behind league leaders South Bunbury on the ladder.
Up against Bunbury, the Bulls ran out to a six-point lead at the main break.
Harvey posted four unanswered goals in third quarter, before going on to win 6.4 (40) to 3.5 (23).
Eaton edged out Collie, 8.9 (57) to 8.4 (52), in Round 10 of this year's SWFL Colts competition.
The Eagles Reserves moved to sixth on the ladder with a 6.9 (45) to 5.7 (37) win over the Boomers.
