Tamara Echegoyen (ESP) and Ekaterina Skudina (RUS) are joint second with six points each whilst Anna Tunnicliffe (USA) is fourth.
The Women's Match Racers resume tomorrow no earlier than 13:30 on the Nothe spectator course.
Follow all the action on the ISAF Olympic Live Blog which will bring competition updates and instant reactions to the action on the race course. Fans can check in and ask our media team questions to get the very latest information. The blog will start one hour before racing each and every day of the competition.