Bob Costas Born Robert Quinlan “Robert Quinlan” Is One of the Most Famous and Respected Sports Commentator in the Media. He Is Widely Known for His Outstanding Work and Contributions to Nbc. This Famous Sports Commentator Was Born in 1952 and Celebrates His Birthday on March 22Nd Every Year. His Nationality Is American. His Race Is White. His Birth Sign Is Aries. He’s Been with Nbc Since the Early 1980S.