You have written that the Wembley tournament was the only significant event of the pro calendar.
I also must contradict here. There of course was the traditional US Pro. You are wrong that the official records of US Pro for 1952 to 1961 were wrong. I have gotten the official list of the winners of every year from USPLTA. I know there is another list with "giants" like Bartzen and Giammalva but that's not the proper US Pro.