For the ex-NFL fullback, see Jim Nance. James William Jim Nantz, III (born May 17, 1959) is an American sportscaster, who has worked on telecasts of the National Football League (NFL), National Collegiate Athletic Association (NCAA) Division I men's basketball and the PGA Tour for CBS Sports since the 1990s. He has been the play-by-play announcer on CBS' top NFL team since 2004.