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In the 1990s, he worked with Oscar De La Hoya, coming out of retirement to do so. Another fighter who Clancy trained was Emile Griffith. Clancy was Griffith's first and only trainer and guided him to world championships in the welterweight and middleweight classes.
He is a member of the International Boxing Hall of Fame. In 1983, he won the Sam Taub Award for excellence in boxing broadcasting journalism. As a broadcaster, he worked for CBS and HBO and was ringside for the famous "No Mas" fight between Roberto Durán and Sugar Ray Leonard, as well as the "One For The Ages" fight between Michael Moorer and George Foreman. Clancy also hosted and produced Gil Clancy's Boxing Journal on the FNN/Score cable TV network.
Clancy and his wife, Nancy, had six children and several grandchildren and great-grandchildren.
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- "2006 Sam Taub Award Excellence in Broadcast Journalism". Boxing Writers Association of America. Archived from the original on 2010-05-09. Retrieved 2010-03-22.