I have loaded a few websites to watch the upcoming NFL / NHL season. I have loaded chromecast on my Amazon firebox to get these websites on my TV but it should with any device via the internet.
This site has any hockey games that are being played in the world. Swedish, Russian, AHL ( minor league NHL teams ) and NHL games. I do have an adblocker loaded but this is a great site
this website shows all American professional sports as well as a few cable channels ; TBS, TNT, ESPN etc...
The NFL games that I have watched on this site gives you the option for which team announcers you want to listen too which I think is a great feature
hope this helps folks