White, Caucasian men tend to dominate strongman competitions.
Blacks tend to dominate boxing (I can only think of Tyson Fury and Klitschko) and sprint events.
Gymnastics is starting to have equal representation at the highest level.
MMA does tend to be predominately white.
A strange mix here.
Swimming tends to be dominated with whites
Basketball seems to be dominated with blacks.
Bot of these I get. Because on average Blacks far as I am aware do tend to be naturally taller than Whites. Also swimming, i think that may be down to whites having a bit less bone density