4 Olympic singles golds in a row might, for sustained excellence, arguably, be more impressive than a NCYGS. Even then, no great player's legacy is based on success in the Olympics. Any player who achieved a NCYGS would be an automatic, no-brainer, entry into the International Tennis Hall of Fame, even if they never achieved much else. 4 Olympic singles golds in a row, without any slam title. I don't think that player ever makes the Hall of Fame.