Beth Mead inspired Arsenal to a first away victory at Chelsea since 2018 with the Gunners winning 2-0 at Stamford Bridge.
The result moved Arsenal within one point of Chelsea in second, but its implications go beyond that. Leaders Manchester City could go nine points clear by the end of the table, if they beat London City on Sunday.
Report: Mead and Caldentey score as Arsenal edge Chelsea in WSL
Mead broke the deadlock soon after the break to give Arsenal a deserved lead before turning provider for Mariona Caldentey six minutes later to effectively seal the game for the Gunners.
The defending champions pushed hard for a way back but were kept at bay by a disciplined defensive showing.
You can relive all the action with our live blog, as it happened, right here: