Sixteen races in six classes will charge the waters of Guanabara Bay on Saturday.
Men’s 49er and women’s 49erFX
New Zealand’s Peter Burling and Blair Tuke took the top spot in both races of the opening series.
In the past four years, Burling and Tuke have been undefeated through 26 regattas in their respective event.
The 49erFX made its Olympic debut in Rio on Friday and Erin Rafuse and Dannie Boyd of Canada claimed the top spot after the two opening series races.
Gold medal favorites and hometown heroes, Martine Grael and Kahena Kunze of Brazil, are in a three-way tie for second overall with France’s Sarah Steyaert and Aude Compan and Italy’s Giulia Conti and Francesca Clapcich.
Team USA’s Paris Henken and Helena Scutt finished 14th overall with 29 net points after two races.
Mixed Nacra 17
Races seven, eight and nine will be important ones for Team USA.
Americans Bora Gulari and Louisa Chafee capsized their catamaran in the day’s first race, and fell to 16th overall on Thursday, but look to bounce back on Saturday.
Scott Giles of Great Britain added his second victory in race six after an 11th-place finish in race five. He leads Slovenia’s Vasilij Zogbar, who struggled today, by 12 points with half the opening series still to sail.
American Caleb Paine put together his best day of these Games on Thursday, with 14th-place and second-place finishes. He ended the day in fourth place, just two points back of Hungary’s Berecz Zsombor, winner of race five.