In sports broadcasting, a commentator is the person who is saying what is happening in the game. In the case of television commentary, the commentator is usually only heard and not often seen. In North American English, a commentator is also called an announcer or sportscaster. Often, the main commentator (called a play-by-play in North America) works with a color commentator and sometimes a sideline reporter. With big events, many sideline reporters are used. 