Even including the old era, CYGS has been done only six times:
Men: Don Budge 1938, Laver 1962 and 1969
Women: Maureen Connoly 1953, Margaret Court 1970 and Steffi Graf 1988.
Some may not know that the term "Grand Slam" was used in tennis only since 1933 when Jack Crawford tried to
do it, but failed at the US Open to Fred Perry. The term "Grand Slam" actually comes from the card game Bridge
(which I play at tournament level) and refers to taking all 13 tricks in a bridge hand.
Just like "Golden Slam" refers to achieving CYGS and the Olympics Gold in the same year, the term
"Super Slam" refers to achieving CYGS and WTF in the same year. Not sure which of the above six
achieved Super Slam. Also, in old times WTF might not even have existed. Need to look up. However,
WTF existed in 1988 and Steffi failed to win it. Gabriela Sebatini won the event.
Actually Steffi lost in the semifinals to Pam Shriver.
"Super Golden Slam" would refer to achieving CYGS, Olympics Gold and WTF in the same year.