England international Beth Mead proved to be the difference as Arsenal came from behind to beat Brighton 2-1 and extend their lead at top of the Barclay's FA Women's Super League.
Trailing to the visitors' first goal in eight matches, Mead's free-kick presented Vivianne Miedema with a tap-in before she whipped home a direct set-piece as they moved four points clear of Chelsea.
Arsenal were rocked in the 15th minute by Emma Koivisto's twisting back-header from 10 yards which looped over Manuela Zinsberger, who was barely off her line.