Greg Louganis as a mentor to USA Diving

In this clip from HBO's new documentary, "Back on Board: Greg Louganis" premiering on Aug. 4, Louganis explains his role as a mentor to Olympic diving hopefuls.

American Olympic medallist Greg Louganis speaks to the media during a World Sport Luncheon in Montreal, Thursday, July 9, 2015.

advertisement | advertise on newsday

Subscribe to Newsday’s sports newsletter for stories, photos and videos about your favorite New York teams plus national sports news and events.