Yes you can watch NBA League Pass and NBA TV on Roku devices and other streamers.
Roku streaming media player is the most popular streamer on the market. To watch NBA League Pass and NBA TV, just download the NBA app on your media device. There is no NBA League Pass app, you watch it through the NBA app once you’re logged in with your account subscription. Then go to games schedule to view current and past games. On each game, you will be available to watch current game, past game, condensed game and a lot more options like home or away broadcasts. You can also access live NBA TV with your League Pass subscription by selecting the NBA TV tab.