Chelsea needed a last-minute goal to earn a 1-1 draw against Arsenal which maintains the champions' unbeaten start to the defence of their title. Lotte Wubben-Moy deflected in Pernile Harder's speculative shot for an own goal after Beth Mead had put the Gunners in front.
The Blues move back in to the top three, three points behind leader Manchester United but with a game in hand. United stay top despite only picking up a point in a thrilling Manchester derby.
City were 2-0 up at United thanks to goals from Chloe Kelly and Laura Coombs. But American star Tobin Heath inspired a United comeback, scoring early in the second half before Kirsty Hanson made it 2-2.
Everton missed the opportunity to put pressure on the leaders, only managing a 1-1 draw with Reading. Ebony Salmon's 92nd-minute equaliser earned Bristol City their first point of the season in a 2-2 draw against fellow strugglers Tottenham.
Birmingham City were the only side on Saturday to register a victory, beating Aston Villa 1-0 in their first ever derby thanks to a goal from Claudia Walker and despite only being able to name two substitutes on the bench due to a Covid outbreak in the squad.
The remaining fixture on Sunday saw Brighton claim a 1-0 win at West Ham, a result which lifts the Seagulls four points clear of the Hammers in seventh place.