Watch Celtics vs. Knicks: How to live stream, TV channel, start time for Sunday's NBA game | CBS Sports Headlines Watch Celtics vs. Knicks: How to live stream, TV channel, start time for Sunday's NBA game How to watch Celtics vs. Knicks basketball game ESN FeedsThis post was originally published … Continue reading Watch Celtics vs. Knicks: How to live stream, TV channel, start time for Sunday's NBA game