Luna Rossa has staged a stunning comeback to keep the America's Cup challenger series final tied against INEOS Britannia

A disastrous nosedive in the day's opening race caused damage to the Italians' AC75, forcing them out of the race.

But after a frantic hour of repairs - which included taping up the damage - Luna Rossa capitalised on a pre-race error by the British, to take race eight by 16 seconds.

The best of 13 race series is now at 4-all.