Tonight’s Celtics vs. 76ers game will not air on traditional cable as it is exclusive to the Prime Video streaming service. NBA on Prime, including Celtics vs. 76ers, is streaming exclusively on Prime Video, so you’ll need an Amazon Prime subscription to watch the game.

Here's how to watch ABC online free without needing a cable subscription. Use these free trials to livestream TV shows, sports and other programming.

While NBA Cup games broadcast on TV across NBC and ESPN, the in-season tournament can also be streamed on web-based streaming cable services — like DirecTV, Fubo and Hulu + Live TV — some of which even offer free trials. Games are also streamable on Prime Video and Peacock.