I would assume those four probably moved to the States or Canada at a young age and developed their skills there. Believe it or not there is an effort to start a Jamaican Olympic Ice Hockey Team although I don't believe there is an ice skating rink on the island at the moment. There are many NHL hockey stars that are JA / Canadians that move there as kids. No doubt about the Jamaican athlete and their ability to learn sports not native to the island. That's why Baseball Jamaica looks so promising.