What about Williams and Sharapova : it's not secret that black people are more powerful, they genes are different from white people.
BS. Black people are some of the weakest among the human races. Look at heavy-weight boxing and fighting sports such as Judo, MMA, Taekwondo.etc. There are some 2 billion blacks in this world compared to 0.5 billion whites. Still, it is the whites who dominate sports such as MMA, boxing, Judo, Karate, Fencing.etc.