Bob Costas left HBO Sports and is now with the MLB Network. As part of a multiyear deal, MLB Network will be Costas' exclusive cable home, where he will host special programming that focuses on the
game's history and its most significant figures. Costas will also serve as the lead play-by-play commentator for a select number of MLB Network's slate of 26 live regular season games. Costas will
maintain all his current duties at NBC, including his role as host of their Olympic and NFL coverage. MLB Network launched in approximately 50 million cable and satellite homes on Jan. 1.