To quote americas's cup .com

"Every Match and race of the 36th America’s Cup presented by PRADA will be streamed live on Youtube, Facebook and americascup.com in almost every country around the world." which is true - for a given value of true. They did it in a way that prevents chrome casting or watching on a smart tv. 

What they have actually done is an embed an unlisted youtube video then added an overlay to block any clicks reaching the youtube features like watchi on youtube or share or open in the youtube app. 

The only way to put it on a TV is to use laptop plugged in and then the overlay breaks fullscreen in 2 of my browsers - the fix:

• Use uBlock origin to hide the custom overlay layer.
• Use the share button to get the youtube link
• Add it to a playlist
• Open the play list in your mobile app
• Flick it to the chromecast.

Simple! Here's today's link. https://www.youtube.com/watch?list=TLGGBVFsl8SNqyMxNDAyMjAyMQ&v=ofnUbyJE2VY&feature=youtu.be

and here it is all queued up in the android app...

Hmmm better charge my phone..