I'm wondering if many top players got past the "B level" in part due to having a practice partner that was also a student of the game dedicated to improving their game.
By "student of the game", I mean someone that watches, reads, searches, questions, analyzes, spends 5 hours a day on AZB
, etc., and practices.
Or were more top players developed because of the influence of a pro or instructional mentor?
By "student of the game", I mean someone that watches, reads, searches, questions, analyzes, spends 5 hours a day on AZB

Or were more top players developed because of the influence of a pro or instructional mentor?