What is required is the physical skill to execute certain kinds of shots including distance, direction, height, spin, etc. One could question if Tiger Woods is genetically a genuine Black, as he is at least one half Thai, plus his Father is a mixed-race Black. Within a range, I do not believe that handling pressure is a purely genetic thing, for it is true that some are disposed to handling pressure and others not, but ability to withstand pressure can thrive in the low intelligent just as much as the extremely intelligent. In fact, the highly intelligent can mess up his play by thinking so much that the purity of his play is lost. One can be taught to thrive on pressure, or to hate it.
Woods handles pressure quite well.
A great many successful golfers are quite small in stature. I have always thought that the larger golfers had a lot of unlocked potential simply because the truth is that few hit the ball proportionately farther than the smaller player. When you see someone as diminutive as say, Corey Pavin hit the ball almost as far as 6' 4'' players you know that if the larger player had Pavin's technique, with their greater arch they could out hit Pavin by a country mile. Also, it is true that blacks have faster twitch muscles than Whites for quick bursts of speed, which may also account in part for his clubhead speed and longer distance. No matter what the reasons, Tiger Woods achievements have been considerable for a twenty-one year old.