Chelsea looked fragile defensively throughout the opening period – just four days after beating Lyon in their Champions League quarter-final first leg – and it was Filippa Angeldahl’s arrowing strike which deservedly put City in front on 21 minutes, her first goal in the WSL.
Lauren Hemp doubled City’s lead with a precise finish across goal (30), forcing Chelsea manager Emma Hayes into a double change before the interval. Hayes had stern words with her players at the break but the hosts held firm to inflict only a second league defeat of the season on their opponents.
The result moves City level on 38 points with WSL leaders Manchester United – second only on goal difference – while Chelsea slip to third place, albeit with a game in hand, ahead of their second leg against Lyon on Thursday.