Dan, why do you belittle Kramer as you use to belittle Rosewall?
Kramer was a fine claycourter as you can see in his five set loss to Segura in the 1950 US Pro. Losing a tough match on clay against a peak Segura is not too bad, I think.
Kramer did enter the 1958 French Pro where he beat Worthington and won 11 games from Rosewall who won the tournament. Your darling Hoad won 12 games from Rosewall...
Okay, that's one RG appearance in how many years? Not much.
How many clay majors? Zero.
Not enough to qualify for top five all-time. Maybe top ten.