Cochet - seemed to do much better as an amateur than when he turned Pro in the early 30's. All up he had 11 majors (World Hard Court Championship, World Covered Court Championship, French Championships, Wimbledon, US Championships, French Pro).
Nusslein - seemed to be amazingly good from his early 20's in the pro's (in the early 1930's). He won the World Professional Championships in Berlin as well as many other top Pro tournaments.
Karel Koželuh - older than Nusslein by quite a bit - but won very many of the Bristol Cup championship in the 1920's which was the top Professional tournament in those days. In the 1930's he won 4 Pro. Grand Slam events as well.
So what order would you place them?
Nusslein - seemed to be amazingly good from his early 20's in the pro's (in the early 1930's). He won the World Professional Championships in Berlin as well as many other top Pro tournaments.
Karel Koželuh - older than Nusslein by quite a bit - but won very many of the Bristol Cup championship in the 1920's which was the top Professional tournament in those days. In the 1930's he won 4 Pro. Grand Slam events as well.
So what order would you place them?