Celtics vs. Pacers live stream: Watch NBA playoffs Game 4 online

NBC Sports Boston coverage today
12-1pm: Celtics Pregame Live presented by TD Bank (NBC Sports Boston)
After the Game: Celtics Postgame Live presented by New England Ford (NBC Sports Boston)

Here's how and when to watch Celtics vs. Pacers, Game 4
When: Sunday, April 21 at 1:00 p.m. ET
TV Channel: ABC & Watch ESPN App