Jay
I opened a thread on it days ago here
My Golden Era has three divisions
Pregolden from 68 to 73
Maingolden from 74 to 89
Postgoldem from 90 to 95
Centrañ year being 81
Borg,Connors,Mac,Lendl,Vilas,Gerulaitis,Tanner,Clerc,Mayer,Kriek,Pecci,Noah and. ...
But I guess 1930 pro and 1950 pro can be also GE even if less global, popular and competitive
I always say it is a 25 year slot similar to modern music
The jazz and blues (delta) of the 30 and 50 can be similar in terms of quality and spur as 1930 and 1950 pros, very talented and creative yet very minoritary and no mass media and industry support and same for early rock with Berry,Pressley,Domino and so om
It changed for tennis in the late 60 with the sudden rise of popularity supported by corporations as well as mass media
And, of course it also happened for modern music, in this case a 30 yrs span from early 60 till early 90
This support took so much creativity, ambition, freshness and it limited the talent
That happened in the mid 90 for both, music and tennis becoming owned by boring and creativuty killing technology
Of course it took different ways in both cases but the basics, the trends and the deep causes are very similar or have many in common
Excuse me for this long post