He also worked as host for the historic 1972 Canada-Soviet Union hockey Summit Series sports telecasts.
He even appeared as "John Marsden" in an episode of Bizarre (filmed at CFTO), in a Super Dave Osborne stunt at Toronto's CN Tower.
Fired in 1986 after a physical altercation with his boss Ted Stuebing, Marsden then was hired by his CTV football broadcasting partner Bill Stephenson at CFRB, went to TSN, and later surfaced at The Fan 590.
Marsden spent most of his time in Florida due to what he felt was the socialization of Canadian society, but he continued to maintain a home in Toronto.
He returned in 1996 to live in Toronto with his family joining him and died of lung cancer on April 27, 2006, aged 69, at Sunnybrook and Women's College Health Sciences Centre.