London 2012 silver medallists Peter Burling and Blair Tuke of New Zealand lead the 49er after a weather-affected opening day of action at the Sailing World Cup in Hyères.
A win and a third-place finish puts them one point clear of Australia’s Will and Sam Phillips, while Great Britain’s John Pink and Stuart Bithell are a further two back.
It could have been better for the New Zealanders though as they capsized at the end of the third race and had to settle for ninth.
Burling and Tuke are on a run of 25 consecutive regatta victories, remaining unbeaten in the Rio 2016 Olympic quadrennial.
"We're here at the World Cup event to win but Rio in 100 days' time is fully on our mind and we're just looking to get better,"said Tuke.
Austria’s Matt Wearn and Germany’s Philipp Buhl took a win apiece in the laser, but it's the latter who leads.
A sixth in the opening race compared to Wearn’s seventh in the second hands him the advantage.
Belgium's Evi Van Acker is aiming for a third consecutive laser radial victory in Hyères and she's done her chances no harm this year with a first and a fourth.
She is a point clear of Czech Republic’s Veronika Fenclova and three ahead of newly-crowned world champion Alison Young of Britain.
Poland’s Pawel Tarnowski and France’s Hélène Noesmoen took a pair of wins to lead the men’s and women’s RS:X respectively.
However, Tarnowski also posted a 17th and Noesmoen a 20th after using their drops.
Maja Dziarnowska of Poland is hot on the heels of Noesmoen in the women's fleet, sitting a point behind having won the opening race.
Following Dziarnowska are her compatriots Zofia Noceti-Klepacka and Malgorzata Bialecka.
Tarnowski has a six-point lead over Portugal’s João Rodrigues, the winner of the other men's race.
The notable breeze was too strong by the afternoon for any racing to take place in the 49erFX.
Just one race was completed in the Nacra 17 as France’s Moana Vaireaux and Manon Audinet finished ahead of Spain’s Fernando Echávarri and Tara Pacheco in second, and New Zealand’s Gemma Jones and Jason Saunders in third.
A race apiece was held in the 2.4 Norlin OD and sonar with Australia’s Matthew Bugg triumphing in the former and the British trio of Hannah Stodel, John Robertson and Steve Thomas taking top honours in the latter.