Sailing gold medallist Nathan Outteridge and sister Haylee have completed their Olympic audition with silver, pipped for the world championship by one point in Geelong.
The Nacra 17 duo are in a spicy selection battle with reigning Olympic silver medallists and cousins Jason Waterhouse and Lisa Darmanin, who have finished the regatta breathing down their neck in third.
Only one crew will compete for Australia in that class in Tokyo, with the cousins' form line strong but the Outteridge's late flourish - and Nathan's 49er gold and silver in the past two Games - hard to ignore.
English duo John Gimson and Anna Burnet won Saturday's final race to leapfrog the Outteridges, who had started the day in top spot.
Australia's Olympic sailing team is likely to be finalised in the next week and feature at least one set of siblings, with Will and Sam Phillips finishing fifth overall on Saturday in the 49er class.
Tess Lloyd and Jaime Ryan landed in 10th overall in the 49er FX class, showing enough across the week to suggest they were also worth including in the team for Tokyo.
Jaime's brother, Will (470), Mathew Belcher (470) and Matt Wearn (Laser) have already been named in the team, while Jake Lilley (Finn) will also present as a medal chance after impressing at last year's Finn Gold Cup.
Australian Associated Press