Kadi Diani and Melchie Dumornay handed Arsenal a rare defeat at the Emirates Stadium on Saturday as Lyon opened the Women's Champions League semifinal tie with a 2-1 win.
Lyon were clinical in attack with Diani finding the back of the net in the 16th minute to put the visitors ahead.
After an initial offside call, VAR allowed the goal that Lyon had built so effortlessly from the back. Right-back Ellie Carpenter provided the assist down the pitch as Diani timed her run perfectly, played onside by Arsenal's Emily Fox.