The ability to sail quickly upwind is shaping more and more as the key to this 34th America's Cup. The Kiwis yet again won the pre-start and the sprint to the first mark but were only 27s ahead after the first downwind leg.
But it all changed on the big upwind leg. The Kiwis have been improving upwind all regatta and today they pulled away convincingly, using that semi-foiling style where the hulls only just kiss the water, reducing drag. They got the better of the tacking duels and rounded the third mark 1m 52s ahead, pulling out from a 200m lead to well over 700m.
"It's just awesome sailing these boats," said ETNZ skipper Dean Barker, happy with the performance but quick to add his usual caveat that they need to find more speed yet.
"It would be nice to get another race in. It was always going to be dicey for race two today but, if we can, we are up for it.
"Unfortunately, the wind is up to about 23 knots at the moment and we are in a windy part of the course. It's a matter of whether the wind is established in other parts of the course."
Racing will resume tomorrow with two races - if needed - to decide the series.