I think you have to be 12 to be in any olympic event, but i'm not positive
Paul HammPaul Hamm , 2003 FIG International Gymnast of the Year, was the first U.S. male in history to win a World All-Around Championship (2003).
Albert Sequin. He was also the first to get a perfect 10.
He was the the first male gymnast to score a perfect 10 at the Olympics.
There is no such recorded evidence as to who the very first black male model was.