A scintillating five-goal stretch in 10 minutes in the opening quarter did the damage as Fremantle racked up an 18-point win over Brisbane Lions to take their place as the lone undefeated AFLW team after five rounds.
The teams shared seven goals in the first period, but two each from Ashley Sharp and Sabreena Duffy put the Dockers 18 points to the good.
Duffy was the star in attack for Fremantle scoring four goals from nine kicks to take the lead in the AFLW goalkicking race with nine. She also registered four behinds and a score assist.
Her teammate Kiara Bowers was again outstanding with 21 possessions and 15 tackles to vie with Duffy for best on ground honours.
Emily Bates had an excellent game for the Lions with 27 possessions, while Ally Anderson collected 24 disposals. Jess Wuetschner kicked two of Brisbane's four goals.
While the west coast team went goalless for almost two full quarters, the Lions could never get quite close enough and Fremantle won 7.8 (50) to 4.8 (32).
That keeps them on top of Conference B with five wins from five games, the only team in either division yet to taste defeat. The Lions have three wins, a loss and a draw and sit second in Conference A.