Chelsea’s 33-game unbeaten run ended when they lost to a struggling Brighton side in February.
Manager Emma Hayes had left Ji So-yun, Pernille Harder and Fran Kirby on the bench but needed to bring all three on 10 minutes into the second half.
They could not find the winner, though, and Megan Connolly scored for Brighton from a corner in the 78th minute to cause a shock.
“They [Brighton] had three shots on target and scored two goals. That’s extremely poor from us,” Hayes said after the game.
How did Chelsea respond to their only WSL defeat of the season? They went and beat Arsenal 3-0 and conceded one goal in their next seven games in all competitions.