Sam Kerr grabbed her first Chelsea goal as the Blues scored three times in ten first-half minutes on the way to routing reigning Women’s Super League champions Arsenal.
Kerr headed in Chelsea’s second goal from a far-post centre by Guro Reiten three minutes after Beth England’s sumptuous curled opener.
Sophie Ingle then made it 3-0 to the visitors with a glorious 20-yard left-foot, half-volley into the top corner inside 20 minutes.
Reiten’s header from Jonna Andersson’s cross extended the lead further after the break.
Beth Mead gave a glimmer of hope for Arsenal with a tame header that slipped through keeper Ann-Katrin Berger’s grasp.
But a dominant Chelsea had little trouble seeing out a win that moved them a point behind Arsenal and new leaders Manchester City with a game in hand on both.
Arsenal have dropped below City, with both teams having lost two games this season, while third-placed Chelsea remain unbeaten after 12 league games.