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 some 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.