Women's Super League leaders Manchester City let slip a two-goal lead as Chelsea fought back to earn a point from a 2-2 draw.
First-half goals from Tessa Wullaert and Georgia Stanway looked like seeing City extend their lead to four points over second-placed Arsenal, who have two games in hand.
Nikita Parris, on her 100th WSL appearance, missed two one-on-one opportunities in the second half to put the result beyond doubt and Chelsea took full advantage.
Ji So-yun struck twice in the second half, with her second goal coming in the 89th minute.
Megan Campbell started on the bench as she continues her comeback from an ACL injury that sidelined her for 15 months. The Drogheda woman came on in stoppage time for Caroline Weir.
City are two points clear of Arsenal, who did not have a league game on Sunday, while third-placed Chelsea's slim hopes of retaining their title just about remain intact as they are still six points behind the leaders.
Elsewhere on Sunday, Bristol City and Brighton shared the points in a goalless draw while Everton's home game against Birmingham was postponed.