John Kenneth "Jiggs" McDonald was the original voice of the Los Angeles Kings, calling the action for the first five seasons (1967-72) of Kings hockey in Los Angeles. During his time, he was paired with color analysts Ed Fitkin (1967-69) and Dan Avey (1969-72).

McDonald spent nearly forty years as an NHL play-by-play announcer, calling his 3,000th regular season game in November 2003, and is believed to have called the most NHL games of any broadcaster.

Upon leaving the Kings, McDonald joined the broadcast booth of the expansion Atlanta Flames, where he was partnered for several seasons with Bernie Geoffrion and would work until the Flames moved to Calgary in 1980. It was then that McDonald replaced Steve Albert as the New York Islanders play-by-play voice. Teamed with former team captain Ed Westfall, McDonald called Islander games for fifteen seasons, including three Stanley Cup campaigns.

He would later handle play-by-play for both the Toronto Maple Leafs, on television, and for the Florida Panthers, on radio. McDonald retired after the 2003–04 season. McDonald, who worked three Winter Olympics for ABC and TNT, was Sports Channel America's voice of the NHL when that network held the NHL television contract between 1988 and 1992. He also did national telecast work for several other networks at various times.

A versatile broadcaster, McDonald also called New York Mets baseball games in 1982 and Olympic basketball for CTV in 1992.

McDonald was named the Foster Hewitt Award winner in 1990 and is honored as a broadcaster at the Hockey Hall of Fame.