The gap was 36 seconds in race one at the third mark - 10 seconds more the second time around.
Team NZ would have to capsize to drop this race.
And by taking both races, Team NZ will have a four-point lead.
It's not over yet but it might as well be.
And could the same be said of the America's Cup? Oracle will have to somehow make up the difference in boat speed.
For those just joining, Team NZ won the first race by 36 seconds. And now they're set to take race two.
No lead changes in this one, unlike the first, in which Oracle grabbed the advantage on the second leg.
And Team NZ round mark four with a huge lead.
On the sprint to the finish now. Team NZ will be very happy with their day's work.
The lead nearing a minute as Team NZ about to cross the line.
And they take the second race!
Two-nil to Team New Zealand.
They need only seven races to claim the Cup. Oracle need 11.
Tactician Ray Davies on the start: 'That was pretty much the race right there.'
Jimmy Spithill: 'Obviously not the result we wanted.'
'We thought they were going to get a penalty on the start there, but it didn't happen.'
'The boats are very close and tomorrow's another day.'
Thanks for joining us on a great day for Team New Zealand. Check nzherald.co.nz as the day unfolds for full analysis from Dana Johannsen and Paul Lewis in San Francisco.
And be sure to tune in tomorrow morning for the second day of racing. Race at 8.10am NZT.