I don't think that genetics are the determining factor in sports. Any sport is 90% about the mental game. My math teacher told our class a story in which he had known a baseball pitcher by the name of Bob. Bob was not what most of us would consider an athlete. He was overweight and clumsy with thick glasses. Everyone thought of him as a laughing stock until he got onto the field. He was the most fiercely competitive person my teacher had ever seen. He set a new record for most strikeouts in a season and was named athlete of the year. He wasn't physically gifted, but he had the drive and determination to succeed. I believe that many great athletes have been "Bobs". Graeme Obree was a "Bob" as were many other sports heroes.