Arsenal responded well after their exit from the UEFA cup and made it seven straight league wins, coming away from Everton with an important 2-0 victory.
The win keeps the Gunners impressive unbeaten domestic league run going to 42 wins and gives them the edge over their likely main rivals this season.
Driving rain and strong winds during the first half made the conditions difficult for both teams. Assisted with the wind in the first period Arsenal pressed hard and Everton's Rachel Brown kept out efforts from Faye White and Jayne Ludlow.
Everton had chances of their own to equalise and looked threatening from several corners, which took a headed clearance off the line and required goalkeeper Emma Byrne to be at her best on two occasion to tip the inswinging deliveries over the bar.
Arsenal managed to sustain the pressure and dealt the killer blow to the Toffee's when Katie Chapman headed a second sixteen minutes from the end, with a Yankey flag-kick again providing the ammunition.