Hank Kaplan nació el 15 de abril de 1919 en Brooklyn, Nueva York, EE.UU.. Estuvo casado con Sylvia L. Kaplan. Murió el 14 de diciembre de 2007 en Miami, Florida, Estados Unidos.
[When asked for his opinion on who he thought the greatest fighter of
all time] I suppose there is a definitive answer to that, but I'd have to break it down this way. My personal favorite fighter is Joe Louis. But the greatest two-fisted fighter I have ever seen is Henry Armstrong. The most skilled fighter I've ever seen is probably Sugar Ray Robinson. The most scientific boxer I have ever seen is Willie Pep, without a doubt. And the man I believe to the greatest fighter who ever lived is Harry Greb. Nobody before him or since him has done the things he did. He was merely a middleweight and
he fought light-heavyweights and heavyweights all over the lot. And here is a guy with 300 fights.