The Kiwi skipper, who was until recently with the French K-Challenge America's Cup team, put in a strong performance, chalking up six wins, and just one loss, on a day when the sea breeze built to over 20 knots.
Behind him three skippers share second place, indicating just what a tight and tough event this is becoming.
MINOPRIO, who appears to be on the comeback trail, after a poor first day commented, 'It was a lot better day today, I think we're just used to sailing the boats more than we were yesterday, and our crew work was a lot slicker.'
SWINTON, who was the overnight leader after the first day, was disappointed with his results on the second day, 'not too bad, but not too good,' was his summary.
'I just had a talk with the guys, and we decided we've just got to sharpen up a bit,' he confessed, 'We're looking forward to it tomorrow.'
Racing started in a light and fickle easterly breeze, but after the first flight of races, the sea breeze started to establish itself, and by midday was a healthy 15 knots, which continued to build through the afternoon.
By the end of the day, the Foundation 36s, used for the series, were carrying one reef, and spinnakers were becoming a dubious asset.
The regatta, in memory of Warren Jones, the mastermind of Australia's 1983 victory in the America's Cup, is being hosted by the Royal Freshwater Bay Yacht Club.
Warren Jones Youth Regatta Standings
1. Graeme SUTHERLAND (NZL), 10-2
2. Alastair HALL (GBR), 8-3
2. Keith SWINTON (AUS), 8-3
2. Seve JARVIN (AUS), 8-3
5. Torvar MIRSKY (AUS), 8-4
6. Adam MINOPRIO (NZL), 7-4
7. Murray GORDON (AUS), 6-6
8. Alexis LITTOZ-BARITEL (FRA), 5-7
8. Robert GIBBS (AUS), 5-7
10. Mark DORLING (AUS), 4-8
11. Tom BARKER (AUS), 1-11
12. Rob SCRIVENOR (AUS), 0-12