Originally Posted by BobbyOne
What Pro majors had official status? As I said before, the current 4 have been official in the open era and amateur era since 1924-1925.
Mustard, you are right that the pro majors did have a doubtful status. They did not have the official label "Pro Grand Slam". Nevertheless it was common sense among the pros that Wembley, French Pro and US Pro were the foremost tournaments, and we should rate them as pro majors. Additional tournaments are thus the more doubtful.
But It's maybe interesting that Rosewall valued his two WCT finals as his greatest achievements even though he won four open era G.S. events. I stress that I don't agree with him because I rate his US Open win of 1970 his best win.