Leg 1 of 8: Nervy start here. Ineos Britannia is sticking to the right side but gets pushed to the left when they skid and break at the cross. They had no choice but they find themselves over 100m behind from the get go. The Kiwis, on the other hand, start well and finish the first leg with ease.

Team New Zealand took their time in choosing their sail size for this race but now both teams are heading towards the start line. Weather is still good to get started on time. This race will have eight legs instead of six.

Race eight will start at 2.15pm BST. Tomorrow, two more races are scheduled, if both are needed, and another two on Sunday, again if needed.

In race seven, New Zealand’s top speed was 48.6kn compared to the Brits’ 48.7kn but their average speed, upwind speed and downwind speed was higher and what ultimately led them to their win.

Peter Burling, the New Zealand captain says: “Obviously a completely different day so requires a differnrt thing. Nice to get out in the breeze. Really shifty dynamics so nice to get the first one right and sail away from that.”

Nathan Outteridge adds: “Super dynamic day. We just got this gust-lull situation where one minute you got eight knots and the next you got 13 or 14. We were pretty switched on to what was happening.”

And Ben Ainslie says: “Tough race for us. the breeze just kicked hard on the right and they did a nice job defending us.”

Ineos Britannia cross the finish line 1:13 after the Defenders.

Team New Zealand win race seven and now lead 5-2

Leg 5 of 6: New Zealand continue to protect the right side of the race – they have the pick of the wind and there is nothing really their opponents can do about it. At this point, they are about 750m behind when the Defenders cross the top gate.

Leg 4 of 6: The Defender’s boat looks completely different than a few days – a lot more stable. The Brits wait for them to make a mistake. Earlier, Team New Zealand’s Ray Davies said: “We seem to have managed to get more performance out of the boat after lots of data analysis.” They lead Ineos Britannia in average speed, average VMG (velocity made good) and manoeuvres.

Leg 3 of 6: So many potholes on the course but New Zealand are still maintaining that they want to stay on the left side. Their top speed is 40km/hr and they have a healthy lead. The Brits finish 24sec behind and you can sense their frustration in their communication.

Leg 2 of 6: This New Zealand team are so good. They have seemingly learned their lesson from the last two races and they team are constantly communicating on board and emphasising that they do not want to play catch up. They once again lead after the second leg and their opponents 13secs behind.

Leg 1 of 6: Team NZ figure out really quickly that the left hand side is where they will get the most advantage with the wind. The Britons opt for a turn towards the right in their racecourse which proves costly and the Defenders get a massive lead early on.

NZ finish in 3:54 and Ineos Britannia make the turn 12sec later.

But we know the Challengers are quick down wind. Can they catch up?

Here we go! Wind sampling is complete and we will be finding out which team has nerves of steel in this crucial race!

We are minutes away from the expected start of race seven and seeing if Ineos Britannia can continue the good form. Take a look here on how the British comeback began in race five.

Another email! This one from Craig.

Is the number of races fixed and whoever wins most of those wins, with the possibility that there could be drawn races? Basically, will they keep going until someone wins 7 or is it the most wins from a fixed number?

It would likely help if the preamble did not have a slight error which has now been fixed, but it is a first to seven system with one point for each race won. The first team to score seven points are the winners of the America’s Cup and become the Defender of the 38th edition.

Here is a handy guide – perfect for all beginners – that explains all the nuances.

This morning in Barcelona the winds were blowing from the north-west and are expected to die down a bit before the start of the race.

Sea state should decrease slightly during the day, and in the afternoon waves of 0.8m are expected to come from the south at 5-second intervals.

The waves are not aligned with the wind, which could make tricky sailing conditions.

Temperatures are lower with a maximum of 20°C.

Our first email of the day comes from Jeremy

Love ‘em or hate ‘em (that’s my case), when it all goes well these foil boats go extremely fast and are exciting to watch. Today is totally “Squeaky-bum time” for Ainslie’s crew, lose just one and NZ are within a day of retaining their crown, lose both and it’s as good as done. I’m wondering if Sir Jim hasn’t taken the opportunity to invite Lord Ferg for a freebie in Barcelona, as compensation for axing his Manchester United ambassador job/salary, and see if he can’t help galvanise the team performance with one of his famous “teacup” talks? What are the wind/water conditions like today?

You’re so right, lots riding on today. Huge pressure on Ainslie and his crew to back up their performances from races five and six. There is also a bit of history on the line here: Ineos Britannia will be the most successful British challenger if they win one more race. I will also be keeping my eyes peeled for any Jim Ratcliffe and/or Alex Ferguson sightings.

And in terms of the weather …

Let’s take a quick look back as to how we’ve ended up here.

Technical issues hampered Ineos Britannia’s boat in the first two races, giving the Kiwi’s two comfortable victories.

They were then hit with a penalty that hindered them in race three …

And despite a fast start in the fourth race, they could not keep up the momentum.

But the New Zealanders suffered in the last two races after finding themselves unprepared by the altered sea state.

Preamble