Reigning premiers Hay Park took on last season's runners-up, Marist, in Round One of the Bunbury and Districts Cricket Association's 2019/2020 Women's competition.
Enjoying the home ground advantage, Redbacks' opening batswoman Bronwyn Walker knocked 59 not out (including seven fours).
After the early dismissal of Shakira Parsons (4), wicketkeeper Katrina Jones (30no off 29 balls) and captain Fiona Florance (19) upped the run rate.
Hampered by Marist bowler Tina Spinelli (5/25 from five overs), Hay Park went on to reach a total of 8/158.
The Blues were stranded on 2/5, following the quick dismissals of openers Gabrielle House (3) and Casey James (0).
Katie Ernst made a solid 24no off 30, before Rebecca Clemons (40) and Aimee Couanon (12) hit their stride.
At the end of their 30 overs, the Blues fell just eight runs short.
Colts kicked off their season campaign with a six-wicket win over Eaton at the Bunbury Recreation Ground.
Eaton celebrated as Patricia Wilson scored a delightful 25 off 34 (including two fours).
Chasing Eaton's 9/119, Colts openers Chantelle Ward (15no) and Leisa Norrish (12) both starred with the bat.
The home side reached the visitors' total in 24.2 overs.
Hay Park continued its title defence with a resounding win over Leschenault in Round Two.
The Redbacks did enough to make 5/147, before dismissing the Green Caps for 61.
Making their competition debut, Collie's women's side notched up a convincing win over Eaton.
Star batswomen Kristylee Martin (23) andJenna Harrington (20) guided Eaton to a total of 170.
Collie then stormed home to claim an impressive four-wicket victory.
Knocking 29 off 30, Ernst led Marist to a resounding win over Colts at Forrest Park.
Colts were eager to make amends against an in-form Hay Park in Round Three.
Following a swift middle order collapse, the Redbacks secured 6/118 right before lunch.
Aided by the partnership of Rebecca Masiero (33no) and Temira Reid (23), Colts reached Hay Park's total in the final over.
Leschenault's Emma Jamieson (42, including seven fours) excelled in the Green Caps' two-wicket win over Eaton.