A Denver, Colorado native, Proctor has called play-by-play for such teams as the Texas Rangers, Baltimore Orioles, Washington Nationals, San Diego Padres and Los Angeles Clippers at various points in his career. Proctor has also done radio play-by-play during his career, working for the Washington Bullets and the New Jersey Nets in the 1980s. He has also worked at various times for networks such as NBC, CBS, and TNT calling events including the NFL, college football, college basketball, and pro boxing. While serving as the Orioles' broadcaster, Proctor appeared in five episodes of Homicide: Life on the Street, between 1993 and 1995, playing fictional reporter Grant Besser.