Oracle's lead still hovering near 200m.
Team NZ's options are limited. Ainslie said: "They have nowhere to go."
Both boats sailing at about 22 knots.
Team NZ now tack to the left as the deficit edges upwards.
Oracle's lead now at more than 300m.
Oracle will retain their lead into the third gate - it's within sight now.
Their lead is nearing 400m.
Oracle are in a dominant position. Team NZ are laying the line but are a long way behind. They're pretty chuffed on board Oracle
And Oracle are through gate three with a clear lead.
Team NZ yet to round the mark - more than 30 seconds behind.
And Team NZ are now through the gate - 46 seconds back.
Oracle's lead is now above 500m.
Looks like we might be coming back tomorrow, folks.
Oracle now leading by 600m.
Oracle are foiling nicely and have better speed
The Americans' lead continues to grow, up near 700m now.
And they still have better boat speed as we head towards mark four.
The lead is settling in at about 700m.
About halfway to mark four, Oracle sailing at about 30 knots and holding a lead of more than 600m.
Team NZ have pulled a little closer but it's probably too little, too late.
Oracle now leading by 550m.
Oracle have mark four within sight and a 600m lead in hand.
Both boats edging near 30 knots but Oracle have shown more consistent boat speed.
Oracle lead by 600m as we approach mark four.
This will be the last race of the day today. We have run out of time (that is, TV time) so, unless Team NZ find a big motor, we will be back again tomorrow to find that elusive victory