cshapiro,
It is just about impossible to be a professional athlete and be shomer Shabat. That is particularly true in golf because almost all tournaments are Thursday through Sunday.
The same is true for stage actors and actresses. Cantor Dudu Fisher was a star as Jean Valjean in “Les Miserables”, but he never performed on Shabat and has never been offered another major Broadway role. (His understudy was really happy, though, because he always got to perform twice a week!)