What a fantastic comeback for Team Oracle! They started the defense already 2 points down (penalties from qualifying rounds). They had their backs against the wall and had to win every race over the past week or so, and had to come from behind in yesterday's final match race. They won with over 40 seconds between them and NZ. That is unheard of in any sport.
The cup stays in America. Kind of weird and there wasn't an American onboard the boat for the whole defense! Guess if you have billions of dollars you can hire your ringers as you wish. The boats are freakishly fast (catamarans) that fly off the water on hydrofoil/centerboards. You can read about it here.